Abaddon the Lord of Avernus is a melee strength Hero known as one of the most versatile characters in Dota due to his rather low mana dependence, short spell cooldowns and a large number of viable item choices. His ability to help sustain his allies and himself plus his strong tower diving capacity give him solid lane presence. Many of his abilities offer a large sum of utility, which makes him a strong support Hero. Mist Coil serves as both a single target nuke and heal that helps shift the sustainability of both allied and enemy heroes in a lane at his will, though sacrificing a portion of his own health. Aphotic Shield holds as one of the most useful abilities in the game, able to shield a target from some damage while also able to reflect said damage to a huge area. The most important aspect is how it is able to dispel many status effects such as slows and stuns. His other abilities allow him to become a mix between a semi-carry and tank. Abaddon's passive, Curse of Avernus, allows his attacks to not only slow down his enemy, but also increase the attack and movement speed of any ally attacking the same target. With his ultimate, Borrowed Time, Abaddon is able to shift all non-HP removal damage he receives into health. When not on cooldown, Borrowed Time may activate passively when his health falls under a certain threshold, even under the most dire situations. Due to his powerful spells and versatility, Abaddon is an excellent addition to any team.
| Abaddon, the Lord of Avernus
| Play "The fog of war is no match for the mist of fate."
|| Support / Carry / Durable
|| The Font of Avernus is the source of a family's strength, a crack in primal stones from which vapors of prophetic power have issued for generations. Each newborn of the cavernous House Avernus is bathed in the black mist, and by this baptism they are given an innate connection to the mystic energies of the land. They grow up believing themselves fierce protectors of their lineal traditions, the customs of the realm--but what they really are protecting is the Font itself. And the motives of the mist are unclear. When the infant Abaddon was bathed in the Font, they say something went awry. In the child's eyes there flared a light of comprehension that startled all present and set the sacerdotes to whispering. He was raised with every expectation of following the path all scions of Avernus took--to train in war, that in times of need he might lead the family's army in defense of the ancestral lands. But Abaddon was always one apart. Where others trained with weapons, he bent himself to meditation in the presence of the mist. He drank deep from the vapors that welled from the Font, learning to blend his spirit with the potency that flowed from far beneath the House; he became a creature of the black mist. There was bitterness within the House Avernus--elders and young alike accusing him of neglecting his responsibilities. But all such accusations stopped when Abaddon rode into battle, and they saw how the powers of the mist had given him mastery over life and death beyond those of any lord the House had ever known.
|| TJ Ramini (Responses)
Able to transform enemy attacks into self-healing, Abaddon can survive almost any assault. Shielding allies and launching his double-edged coil at a friend or foe, he is always ready to ride into the thick of battle.
- On each successful attack, Abaddon places a debuff on the target which slows them.
- Every unit which starts attacking a unit which has the Curse of Avernus debuff on, gets the speed increasing buff.
- This means it doesn't matter if Abaddon is still attacking the unit. As long as a unit has the debuff on, other units will get the speed buff upon attacking it.
- The slowing debuff can be placed on buildings, but cannot be placed on wards or allied units.
- The speed increasing buff is not applied on buildings and wards attacking a debuffed unit, but is applied on enemies (e.g. upon denying a debuffed ally).
- Abaddon himself will always get the speed increasing buff, regardless of the debuff, except when the attack target is a building.
- Successive attacks on the same target do no stack, but refresh the duration instead. This goes for the buff and debuff.
- Interrupts Abaddon's channeling spells upon cast. Does not interrupt channeling spells when passively activated.
- Disjoints projectiles and applies a strong dispel on Abaddon upon activating, be it manually or passively activated.
- It cannot be manually activated, but can passively activate while silenced or hexed. It also cannot be shift-queued.
- Activates automatically when a physical, magical or pure damage instance drops Abaddon's health below 400.
- The damage instance which passively activates Borrowed Time is not healed back up.
- This means if the damage instance exceeds Abaddon's current health, he dies without Borrowed Time getting activated.
- This also means that it won't save Abaddon from instantly killing effects like Culling Blade and Ice Blast
- Borrowed Time has the highest priority in the group of damage negating spells.
- This means when combined with other damage negating effects (e.g. Aphotic Shield or False Promise), Borrowed Time negates the damage while the others do not.
- For False Promise, this means that Borrowed Time first turns damage into heals, and then it is registered by False Promise as a heal and not as damage.
- As with all damage manipulating effects, Borrowed Time only negates and heals from the 3 damage types. It does not heal from HP Removal.
- The damage redirection granted by Aghanim's Scepter is an aura and thus the buff lingers for 0.5 seconds.
- The damage reduction for allies stacks multiplicatively with other sources of damage reduction.
- The damage reduction of the aura does not reduce damage for units under the effect of any damage negating effect.
- Tango and Healing Salve are important in order to keep Abaddon from being harassed out of the lane, particularly as he is a melee hero.
- Clarity fuels Abaddon's powerful spells, giving him the mana to make or break engagements through manipulating the HP and damage taken by his allies.
- Iron Branches are cheap and give Abaddon additional attributes. They can be built into a Magic Wand or Mekansm components, or simply sold for more inventory space.
- As a support Hero, buying the Animal Courier is expected as the hero is less item-dependent than others.
- Boots of Speed are important to get early on Abaddon, as he needs good positioning in order to make use of his spells. It also allows him to more easily chase down enemies with Curse of Avernus.
- Magic Stick is important for giving Abaddon burst HP and mana regen whenever he needs it. Both can fuel his spell-casting and increase his longevity in fights, allowing him to accomplish more.
- Ring of Basilius provides Abaddon with more armor, bonus damage, and mana regen to fuel his spell-casting. The aura boosts his allies' survivability, further increasing his ability to protect them, and the item can be disassembled and both components recycled for later items once Abaddon's intelligence reaches the threshold where a basic Sage's Mask gives him better mana regen.
- Tranquil Boots are very powerful on Abaddon, on top of being the cheapest boots upgrade available. The increased movement speed gives Abaddon better positioning, allowing him to get his spells off more easily. The additional armor gives him tankiness, increasing his effective HP against physical damage. The HP replenishment allows Abaddon to recoup the HP cost of Mist Coil, ensuring that he never puts himself at too much risk when casting the spell.
- Magic Wand gives Abaddon increased attributes and much more burst HP and mana regen, giving him much more survivability and allowing him to use his spells even after running completely dry.
- Soul Ring gives Abaddon mana on demand, allowing him to more profligately cast his spells. The HP and mana regen improve his self-sustain, and the item's HP cost is easily negated by Tranquil Boots.
- Mekansm gives Abaddon a powerful heal with which to protect his team, alongside Mist Coil. It also gives Abaddon more tankiness through the additional attributes and armor, making him harder to bring down.
- Observer Wards are important to purchase regularly as a support. Providing map vision gives Abaddon and his team forewarning to engagements, allowing Abaddon to show up to keep the tide of fights in his team's favor.
- Town Portal Scroll is important on all heroes. Abaddon's ability to turn ganks around and give his team a strong survivability advantage make him a strong hero to have present in any engagement.
- Vladmir's Offering is a solid item on Abaddon, no matter what role he takes. Its aura grants armor, damage, HP and mana replenishment, lifesteal, and bonus damage to Abaddon and all nearby allies, making it a powerful item to have present in any fight.
- Pipe of Insight gives Abaddon greatly increased magic resistance and HP regen, allowing him to shrug off magic nukes and vastly increasing his survivability. The active allows Abaddon to further protect his teammates through shielding them from the enemy's magic nukes for a short time, synergizing with Aphotic Shield.
- Drum of Endurance is a good all-around attribute item that gives Abaddon more HP, mana, armor, attack speed and damage, as well as an aura that he and his team can utilize for much longer due to Abaddon's tankiness.
- Radiance is a strong carry item, as it greatly increases Abaddon's attack damage and gives him a burn aura that forces the enemy to engage him. The aura also inflicts a blind debuff on the enemy, causing them to miss attacks directed at any friendly units so long as Abaddon is nearby.
- Assault Cuirass greatly increases Abaddon's armor and attack speed, giving him physical survivability and increased damage output to allow him to carry effectively. The aura also greatly benefits teammates, and reduces enemy armor, allowing Abaddon and his team to deal more damage.
- Necronomicon gives Abaddon powerful utility through being able to summon minions. The item grants Abaddon more strength and intelligence, giving him more HP, base damage and mana, while the summoned units can be used to push, contribute in fights, or provide True Sight once fully upgraded.
- Aghanim's Scepter extends the duration of Borrowed Time and allows Abaddon to shield his allies from damage. The reduced damage can also force the enemy to heal Abaddon as it is redirected to him during the ultimate.
- Heart of Tarrasque drastically improves Abaddon's HP, making him significantly harder to bring down. It also allows him to quickly replenish his HP outside of combat, making him a powerful threat if he is farmed enough.
- Scythe of Vyse provides Abaddon with a single target hard-disable, making it a powerful support item. It gives Abaddon stats across the board and greatly improves his mana pool and mana regeneration, allowing him to make strong use of his spells.
- Flying Courier should always be purchased at the first opportunity when playing as a support, in order to facilitate delivering items to teammates in the laning stage.
- Guardian Greaves greatly boosts Abaddon's survivability and allows him to greatly support his team. The heal and mana replenishment are very powerful, and the self-dispel allows Abaddon to remove debuffs from himself that may be preventing him from participating effectively in teamfights. The aura is also very strong, giving Abaddon and his teammates enhanced survivability when they are at low health, giving Abaddon more time to save and protect them with his spells.
- Glimmer Cape is a strong support utility item, allowing Abaddon to cloak a teammate in invisibility and greatly boost their magic resistance. If needed, it can also be used to help one of Abaddon's teammates initiate invisibly on the enemy.
- Solar Crest is a powerful support item that further enhances Abaddon's ability to protect his teammates. The armor and mana regen give Abaddon survivability and mana sustain, and the active allows Abaddon to either enhance a teammate's survivability against physical attacks, or induce an armor debuff and miss chance on a troublesome enemy to reduce their ability to fight.
- Abaddon is renowned for his multipurpose spells capable of manipulating how much damage the enemy is able to deal to his team, and turn it against them. In this way, Abaddon is not only able to protect and heal his teammates, but also possesses offensive potential capable of dealing damage to enemies as well.
- Abaddon's versatile skill set allows him to be played as either a carry or a support, depending on what his team needs. He is able to gear his skill build towards protecting teammates and shielding them from harm, or for more offensive purposes to give himself more damage output.
- Beware that Abaddon has very long cast animations for Mist Coil and Aphotic Shield, requiring roughly 50% more time to cast his spells than most other heroes. Positioning and planning ahead are crucial for allowing Abaddon to get his spells off in time.
- One of Abaddon's early weaknesses is his poor agility, resulting in low base armor (and thus vulnerability to physical damage despite being a strength hero) and poor attack speed (hampering his carry potential). Rectifying his armor weakness is crucial in order to make him effective in any role he plays, though improving his attack speed is dependent on if he is playing as a carry.
- Depending on if he is being built as a support or carry, Abaddon has differing itemization priorities and skill builds.
- Most generally, Abaddon is played as a safe lane support due to the vast survivability his skills provide for his team. His role in the safe lane is to control lane equilibrium through pulling creep waves, as his ability to harass the enemy off-laner is hampered by being a melee hero. He also stacks jungle camps for his carry to farm later, and acts as a babysitter capable of protecting his lane against enemy aggression with his powerful survivability spells. As a support he focuses on building mana items to allow him to continue casting his spells, and HP regen items to fuel the cost of Mist Coil, then utility items to give his team an advantage in fights. His skill build aims towards maxing out Aphotic Shield and Mist Coil first in order to maximize his early nuking power while also protecting his teammates.
- As a carry, Abaddon must gear towards tankiness and damage output, forcing the enemy to treat him as a threat so that he can take advantage of his ultimate. A carry Abaddon is geared less towards casting but more towards damage output, prioritizing Mist Coil for nuking power and Curse of Avernus for attack speed. Unlike most carries that try to directly attack and kill the enemy, Abaddon's carry potential lies in forcing the enemy to engage him and wasting their nukes and disables on him, and then negating that damage with his ultimate.
- Mist Coil is a versatile targeted spell that allows Abaddon to heal a teammate or damage an enemy, at the cost of mana and HP.
- Mist Coil allows Abaddon to heal teammates if they get low on HP, and can be an unexpected surprise if the enemy attempts to gank an ally. Healing a teammate during an enemy gank forces the enemy to commit further time, nukes and attacks in order to get a kill, which can cause them to overextend and open themselves up to a counter-gank.
- Mist Coil's low cooldown allows it to be used multiple times in an engagement at all points of the game. It can be used as a heal in one cast, a damage nuke in another, and even cast to break Linken's Sphere on an enemy or Roshan.
- Beware of overtaxing yourself when using this spell repeatedly. While its low mana cost and short cooldown allows Abaddon to almost always have this spell at the ready, getting too low in HP can prevent him from being effective in fights due to the danger of dying to enemy focus without Borrowed Time, or being forced to use his ultimate too early.
- The health cost of Mist Coil is dealt as Pure damage, which allows it to interact with Abaddon's other spells.
- Because it is treated as damage by game mechanics, Mist Coil's damage is affected by both Aphotic Shield and Borrowed Time. Casting Mist Coil during an active Aphotic Shield will prevent Abaddon from taking damage while simultaneously adding to its damage threshold, and can either proc Borrowed Time passively when falling below 400 HP or heal Abaddon if it is already active.
- The self-damage from Mist Coil is also lethal, which allows Abaddon to commit suicide with the spell. Deliberately used in this manner, Abaddon can deny himself in the face of attacking enemies, preventing them from profiting from his death.
- During pushes, Abaddon can cast Mist Coil and/or Aphotic Shield on a currently tanking lane creep, to boost their survivability. It can also be cast as a farming nuke to secure last-hits at range.
- Aphotic Shield places a shield over any friendly unit, removing debuffs from them while also shielding them from a set amount of damage that is then turned against the enemy when the shield bursts.
- Aphotic Shield is a very powerful protective spell, as it completely shields allies from damage while it is active, and then turns into an area damage nuke upon expiring. It can be used effectively to use the enemy's damage against them.
- Casting Aphotic Shield on an ally will apply a strong dispel on them, removing stuns as well as all otherwise purgable debuffs. This makes the spell extremely strong against long-duration disables such as Sacred Arrow, Fiend's Grip, Chaos Bolt and so on, as the disable can be immediately broken and the target allowed to act.
- Aphotic Shield can be used as a farming and pushing spell, due to its area damage. Placing the shield on the lead creep in an attacking wave will shield it from damage for a short time, and then inflict area damage on the enemy creep wave once it bursts. Similarly, casting it on Abaddon while farming neutral camps allows him to deal nuke damage after shielding himself from their attacks.
- Used as a counter-gank spell, Aphotic Shield has the power to completely turn situations around. Shielding a teammate who is being ganked will stop them from taking damage (and can be further augmented by healing them with Mist Coil), forcing the enemy to commit additional time and attacks, and then turning that damage against them, effectively causing a double shift in HP of the shield's listed value. The damage from a bursting shield can potentially damage an enemy enough to bring them within kill range.
- In the same vein, Aphotic Shield is a powerful tower-diving spell for finishing off weak enemies. Placing Aphotic Shield on an ally will prevent them from taking damage from tower hits for a short time, and the shield bursting will deal nuke damage to the enemy, usually enough to finish them off. As well, tower-diving allies do not need to stop to perform cast or attack animations in order for the shield to burst, allowing them to easily chase within range of the detonation.
- Unlike most other sources of damage negation, Aphotic Shield will block any damage that is taken after reductions. This means that magic resistance and armor can increase Aphotic Shield's potency, as none of the shield's power is wasted on damage that is reduced by resistances (e.g., a 200 magic damage nuke on a target with 25% magic resistance will deal 150 damage to the shield).
- Casting Aphotic Shield upon the same target before its duration has ended will automatically detonate the shield before reapplying another. Combining this tactic with its massive radius can help to increase your DPS in a teamfight or finish off enemies during a chase.
- Curse of Avernus allows Abaddon to inflict a movement and attack speed slow debuff on any enemies he attacks, while providing a movement and attack speed buff to all allies who target that enemy.
- In practical terms, the short debuff duration of Curse of Avernus means that Abaddon must constantly focus on attacking an enemy in order to inflict them with the slow for more than a short period of time. Additionally, allies must coordinate with Abaddon in order to ensure that they can maintain the speed buffs through focusing on affected enemies, as the buff duration is only marginally longer than the debuff.
- During the laning phase, Curse of Avernus can be a useful spell to get at least one level in, as the movement speed shift can allow Abaddon and his allies to gain a speed advantage over gank targets. This can also be used defensively, inflicting a ganking enemy with the debuff to prevent them from easily chasing allies.
- Curse of Avernus can be a useful spell for farming, as it will reduce neutral creeps' attack speed while boosting that of Abaddon, increasing his damage output while simultaneously reducing theirs to mitigate any damage dealt to Abaddon's HP pool.
- In concert to the above, Abaddon can push creep waves surprisingly well through judicious use of Curse of Avernus. Inflicting the debuff on enemy creeps will reduce their damage output while also boosting that of allied creeps, causing the creep wave to push towards the enemy base without needing to expend mana. The curse can also be inflicted on enemy buildings, particularly their towers, cutting down their attack interval while also increasing that of all creeps attacking them, accelerating the tower's destruction.
- Abaddon benefits from building items that provide additional slow, as they stack linearly with that applied by Curse of Avernus. Further reducing the enemy's movement and attack speed can give Abaddon and his team a powerful mobility advantage.
- Remember that while Curse of Avernus's debuff can be purged, it can also be applied through spell immunity. This allows Abaddon to inhibit the enemy's attempts to re-position and attack even if they activate spell immunity, which can give his team a crucial edge in fights.
- Borrowed Time, Abaddon's ultimate, converts all incoming damage into healing of the same amount, allowing him to recover tremendous amounts of HP when near death.
- Borrowed Time is a good way to make the enemy to waste time and spells on Abaddon, as he can simply heal back up and force them to engage him all over again when their abilities are on cooldown. This is best exploited if Abaddon is already at full health, as the enemy will need to expend resources to bring him to low health first, before proccing Borrowed Time.
- Abaddon can tower-dive quite effectively in the early game combined with Borrowed Time, as he can simply ignore tower and creep damage in his pursuit, and then finish the foe off with his other spells. Remember that Mist Coil's self-damage is treated as a heal during Borrowed Time, allowing Abaddon to use it as a self-heal and nuke with only mana as its cost.
- During Borrowed Time, Aphotic Shield will not proc any damage shielding, as any incoming damage is treated as a heal after reductions. Casting Aphotic Shield during Borrowed Time not only removes debuffs from Abaddon, but also leaves him with a fresh shield once it ends.
- If the enemy attempts to avoid attacking Abaddon during Borrowed Time in an effort to prevent him from healing, Abaddon can force the issue by taking advantage of enemy area nukes and attracting the attention of the enemy's towers and creeps. Spells such as Macropyre, Midnight Pulse and March of the Machines can deal area damage outside of the casting hero's control, and can be used as sources of healing during Borrowed Time.
- Abaddon retains the ability to cast Borrowed Time through any disables excluding Silence and Hex. This allows Abaddon to snap himself out of most enemy disables, including targeted channels like Dismember and Fiend's Grip and directly engage the enemy or cast his spells (for instance, to heal an ally with Mist Coil or protect them with Aphotic Shield). However, beware of persisting area disables such as Black Hole, Ice Path and Chronosphere, which can immediately disable Abaddon again after casting.
- Beware that since the damage instance that procs Borrowed Time is not healed up, it is possible for Abaddon to die if an attack brings him from above 400 HP to death in a single instance, as Borrowed Time will not passively proc. In order to circumvent this, Borrowed Time can be manually cast before reaching the threshold, and with good timing can bait the enemy into healing Abaddon.
- With Aghanim's Scepter, Abaddon gains the ability to shield all nearby allies from harm during Borrowed Time, by giving them a damage resistance buff that redirects half of all damage they would otherwise take to Abaddon during his ultimate. Used at the right time, it can give teammates much more survivability by doubling their effective HP against all damage types for the duration of Borrowed Time, while forcing the enemy to heal Abaddon himself.
- Due to his great flexibility, Abaddon benefits from building a wide variety of items depending on his build.
- Stout Shield is a useful item to mitigate any harass Abaddon takes in the laning stage, particularly if he is being built as a carry.
- Orb of Venom allows Abaddon to apply a slow with his attacks, and stacks alongside Curse of Avernus. It can be a good item to build for an aggressive posture, in order to inflict a stronger slow on gank targets.
- Urn of Shadows is a useful utility support item that synergizes with Abaddon's ability to protect and heal his team. The increased strength gives Abaddon more HP and base damage and the mana regen helps keep his mana pool filled. Urn charges can be used to heal teammates or damage enemies alongside Mist Coil, and can be used on Abaddon himself to recoup Mist Coil's HP cost.
- Arcane Boots is a strong support item that allows Abaddon to replenish his teammates' mana as well as his own. Given the strong defensive power of Aphotic Shield, having the mana to cast it whenever it is needed can greatly benefit Abaddon's team.
- Power Treads helps give a carry Abaddon more combat presence. The increased attack speed allows Abaddon to utilize his physical attacks more, and attribute switching can reduce the mana cost of Aphotic Shield, reduce the HP cost of Mist Coil, and give Abaddon more HP and base damage as needed.
- Mask of Madness is a cheap lifesteal item that can give Abaddon tremendous attack speed in order to increase his damage output as a carry. The lifesteal allows Abaddon to maintain his HP while farming, and recover the HP cost of casting Mist Coil. Using the active in combat allows Abaddon to utilize his physical attacks to deal damage, while at the same time boosting his movement speed to better allow him to take advantage of Curse of Avernus. The increased damage vulnerability can be ignored in favor of Borrowed Time, which prevents the enemy from using it against him.
- Blade Mail can be a powerful semi-carry item that fills in several of Abaddon's deficiencies. The bonus armor increases his tankiness, the bonus intelligence gives him more mana for casting spells, and the bonus damage increases his damage output for fighting and farming. The active can allow Abaddon to use his HP pool offensively during fights, discouraging the enemy from focusing him down when he does not have Borrowed Time activated.
- Force Staff is a strong utility support item that helps Abaddon to get his spells off and protect his teammates further. The increased intelligence and HP regen give Abaddon a bigger mana pool and helps sustain his casting of Mist Coil, and re-positioning himself allows him to get within range to use his spells to protect his allies. As well, the active can also be used to help push escaping allies to safety if enemies are pursuing.
- Blink Dagger greatly increases Abaddon's mobility, allowing him to engage the enemy more effectively during teamfights, position himself for casting his spells on his teammates, and chase enemies down as needed. Both Aphotic Shield and Borrowed Time can be used to prevent Blink Dagger's on-damage cooldown from proccing, allowing Abaddon to use it to blink whenever needed.
- Armlet of Mordiggian is a useful mid-game carry item to build. While the HP cost of the active cannot be converted into healing by Borrowed Time, Armlet provides many powerful carry bonuses, and Borrowed Time can still be activated once Abaddon's HP is low in order to quickly recover HP through enemy damage.
- Eul's Scepter of Divinity increases Abaddon's support potential tremendously and is relatively cheap to build. The bonus intelligence and mana regen greatly improve Abaddon's ability to cast his spells to protect his team, and the bonus movement speed gives him better positioning ability as well as allowing him to get within range to use Curse of Avernus against enemies more easily. The active allows Abaddon to instantly disable an enemy from range, or can be used on himself to remove silences that may be preventing him from casting his spells or manually activating Borrowed Time.
- Rod of Atos gives Abaddon greatly increased support potential while also making him more tanky. The huge intelligence boost greatly improves his ability to cast spells, while the bonus HP makes him harder to bring down in fights, as well as increasing the potency of Borrowed Time. The active allows Abaddon to greatly slow an enemy's movement speed from long range, allowing him to get within range to inflict them with Curse of Avernus to further debilitate their mobility.
- Crimson Guard is a powerful utility item that benefits Abaddon both as a carry and a support. The damage block, increased HP and bonus armor make Abaddon much harder to bring down with physical damage, and the active gives all nearby allies enhanced damage block and armor, increasing their resistance to physical damage for a short duration.
- Heaven's Halberd gives Abaddon increased tankiness and a strong active that helps him carry in teamfights. The increased strength and bonus evasion give Abaddon much more survivability against physical attacks, and the active allows him to disarm an enemy carry during a fight, preventing them from effectively contributing.
- Black King Bar can be a necessary purchase on a carry Abaddon if the enemy has a large number of disables. While Abaddon can remove debuffs from himself with Aphotic Shield and Borrowed Time, spell immunity allows him to act continuously without the fear of being chain-disabled and rendered unable to participate in fights at all. The bonus strength and attack damage also increase his HP and damage output, giving him more carry potential.
- Lotus Orb can be a very powerful utility support item that further allows Abaddon to keep his teammates alive. The item gives Abaddon increased armor for tankiness and mana and HP regen for self-sustain, allowing him to always be ready to participate in fights. Using the active on himself or a teammate discourages the enemy from casting single-target spells on them, as they can be turned back against the enemy; if Abaddon is not the target of the Echo Shell, he can also remove any disables placed on the targeted ally with Aphotic Shield, effectively using the enemy's disables against themselves with no effect on Abaddon's team.
- Moon Shard greatly increases Abaddon's attack speed, giving him much more physical damage output, and increases his situational awareness at night. It can also be consumed in the late game to give Abaddon a permanent attack speed bonus and free up an inventory slot for other items.
- Shiva's Guard is a strong item to build on Abaddon whether he is a support or carry. It greatly increases his armor and intelligence, increasing his tankiness and greatly improving his mana pool. The passive aura greatly reduces enemy attack speed, which can be stacked alongside Curse of Avernus, and the active ability allows him to inflict a damage nuke and slow enemy movement speed as well.
- Silver Edge gives Abaddon offensive potential and a powerful active, increasing his carry potential. The item's attributes give him more HP and physical damage output, while the active can give him both initiation and escape ability, something he otherwise lacks. The active allows Abaddon to apply a break to an enemy during initiation at the same time as Curse of Avernus, negating their passives and reducing their overall damage output while simultaneously dealing backstab damage and applying Curse of Avernus to them.
- Eye of Skadi is a very powerful carry item to build on Abaddon. It gives him stats across the board, improving his HP, mana, base damage, and attack speed, as well as giving him a powerful Unique Attack Modifier that can greatly slow any attacked enemy alongside Curse of Avernus.
- Mjollnir can give a carry Abaddon much more teamfight presence. The greatly enhanced attack speed allows Abaddon to utilize his physical attacks more, and allows him to proc Chain Lighting to inflict magic damage to multiple enemies in a fight. The Static Charge active can enhance Abaddon's tankiness, discouraging enemies from attacking him while it is active and allowing him to deal even more area magic damage.
- Satanic is mainly strong on agility hard carries due to their high physical damage output and small HP pools, but can be very strong on carry Abaddon as well if he has built up enough physical damage output. The lifesteal and armor greatly increase his tankiness, alongside the bonus strength, which gives him HP and more damage to utilize the lifesteal. The active can be treated as a pocket version of Borrowed Time, allowing Abaddon to bring his HP back up to full in a matter of seconds using his damage output, drastically increasing his tankiness and forcing the enemy to work down his HP a third time.
- Abyssal Blade allows carry Abaddon to become a major threat to enemies with his physical attacks once he has built up enough attack speed. The item provides him with a large amount of bonus damage, more strength for HP and base damage, a passive bash for engaging enemies, and an active hard-disable that pierces spell immunity.
- Abaddon's title, Lord of Avernus, is a reference to the famous crater in Italy, which was, in ancient times, believed to be the entrance to the underworld.
- In DotA, Abaddon's third ability was originally called "Frostmourne." It was changed in transition to Dota 2 due to copyright reasons, since Frostmourne exists as a famed weapon in the Warcraft universe. When using Curse of Avernus, Abaddon says 'The mistblade bites', which is similar to Arthas's Quote: 'Frostmourne hungers'. Similarly, his first ability was originally named "Death Coil", but was likely changed to differentiate it from the ability used by death knights in the Warcraft universe; one of his responses when using Mist Coil references the original name.
- In the Christian Bible, Abaddon is the name of an angel who will rise from the Abyss and command an army of locusts. Abaddon in Hebrew means "Doom", which is ironic, given that Abaddon's skill set is focused on keeping his team alive.
- Rescaled Mist Coil manacost from 75 to 50/60/70/80.
- Aghanim's Scepter upgraded Borrowed Time now redirects 35% of all damage dealt to allied heroes within a 900 radius of Abaddon to Abaddon when active.
- Aphotic Shield
- Now explode at the end of its duration if it has not taken sufficient damage.
- Reduced cooldown from 18/15/12/9 to 14/12/10/8.
- Increased cast range from 450 to 500.
- Undid melee hero collision change from 6.72c
- Melee hero collision size now reduced from 24 to 12.
- Increased attack range from 100 to 128.
- Increased Aphotic Shield cast range from 350 to 450.
- Reduced Mist Coil cast range from 600 to 300.
- Increased Aphotic Shield damage block from 100/125/150/175 to 110/140/170/200.
- Aphotic Shield
- No longer causes Abaddon to heal when cast on self while under the effect of Borrowed Time.
- Reduced damage block from 125/275/225/275 to 100/125/150/175.
- Reduced duration from 20 to 15.
- Increased manacost from 100 on each level to 100/105/110/115.
- Reduced cooldown from 23 to 18/15/12/9.
- Notes: When cast on same unit twice before the first shield expires, it refreshes the duration and max damage block.
- Borrowed Time
- Now turns every damage taken into heals, instead of only blocking the damage and only healing when affected by Aphotic Shield.
- Is now compatible with Refresher Orb (previously, casting it multiple times within a cooldown period had no effect).
- Increased cooldown from 45 to 60.
- Increased base armor from 1 to 2 (total armor is now 4.38).
- Aphotic Shield
- Reduced cast range from 1000 to 800.
- Increased cooldown from 21 to 23.
- Mist Coil:
- A coil of death that can damage an enemy unit or heal a friendly unit at the cost of his own life. Manacost decreases per level.
- Cast range: 600
- Self damage: 50/75/100/125
- Targe damage/heal: 100/150/200/250
- Manacost: 75
- Cooldown: 15
- Notes: The self damage is lethal and can be used to deny oneself. The self damage is absorbed by Aphotic Shield and blocked by Borrowed Time
- Old Curse of Avernus:
- Empowers the legendary sword with the ability to reduce the target's speed.
- Movement speed slow: 7%/14%/21%/28%
- Attack speed slow: 7/14/21/28
- Slow duration: 2
- Notes: Is a buff placer.
- New Curse of Avernus:
- Abaddon strickens an enemy with his sword's chilling power on each attack, causing all units who attack the slowed enemy to gain movement and attack speed.
- Enemy movement speed slow: 5%/10%/15%/20%
- Enemy attack speed slow: 5/10/15/20
- Slow duration: 2
- Allies movement speed bonus: 10%
- Allies attack speed bonus: 10/20/30/40
- Speed duration: 4.5
- Notes: Is a buff placer. All allied units which are not buildings or wards get the speed bonus upon starting to attack debuffed enemies.
- Aphotic Shield now applies a strong dispel on the target upon cast.
- Mark of the Abyss
- Now also increases movement speed by 10% on each level.
- Reduced manacost from 100 to 75.
- Borrowed Time
- Can now also be manually cast, instead of being only passively triggered at 400 health. Same cooldown and duration.
- Now applies a strong dispel when activated.
- Reduced cooldown from 60 to 45.
- Old Mark of the Abyss:
- Marks a target unit, binding Abaddon to it. Abaddon will gain a boost in attack speed. You cannot stop attacking until either you or the mark die.
- Cast range: 1000
- Attack speed bonus: 25/50/75/100
- Duration: Until either die
- Manacost: 100
- Cooldown: 75
- Notes: Abaddon cannot be controlled during the spell. He will do nothing else but attack the target until either die. The target is not forced to attack and can act freely.
- New Mark of the Abyss:
- Marks a target unit for 20 seconds. All units that attack it will gain a temporary attack speed boost.
- Cast range: 1000
- Attack speed bonus: 15/30/45/60
- Mark duration: 20
- Attack speed duration: 5
- Manacost: 100
- Cooldown: 45
- Notes: Any unit which attacks the target gains a buff for 5 seconds. The buff is placed upon starting the attack. Does not place buff on enemies.
- This ability got replaced by Mist Coil in the 6.33 gameplay patch. Its effect got merged into the passive ability.
- Grants the bonus to any allied unit which is not a building or ward upon starting an attack on the marked unit.
- This ability got reworked into the current Curse of Avernus in the 6.33 gameplay patch.
- Successive attacks with Curse of Avernus do not stack, but refresh the duration instead.
- This ability got reworked in the 6.24 gameplay patch.
- Abaddon cannot be controlled until he or the target dies. The target is not disabled and can act freely.