Aura
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Auras are passive abilities that grant a buff or debuff to units in an area of effect around the holder, or in some cases, over a short period at a targeted point or unit. By default, the buffs and debuffs linger on the affected units for 0.5 seconds after not being affected by the source any more, however, some auras have a different value. Generally, aura buffs and debuffs are not dispellable and multiple auras of the same kind do not stack, but there are various exceptions.
Most auras cannot be controlled. They always affect units around the holder. Some auras can be toggled on or off. A few auras also have an extra active component, which ranges from temporarily boosting the aura to deciding whether it should affect surrounding heroes only or not. The active components or the toggle ability are treated like a regular spell, meaning they cannot be used or toggled while silenced or disabled. Beside these, there also are temporary auras, which are provided for a certain time period by casting a spell.
There is no set rule for which units are generally affected by auras and which are not. It depends on the aura which units it affects and which it does not. If a unit does not meet the requirements for the aura, it is not affected. There are auras which affect only ranged units, or melee units, only heroes, or only non-heroes. As a rule of thumb, positive auras usually affect allied units (including the holder of the aura), while negative auras affect enemy units. There are a few exceptions.
Auras usually also affect invisible units, and units in the Fog of War and are bestowed by them (which often allows to detect if an invisible enemy is nearby). However, almost all auras do not affect invulnerable or hidden units.
Illusions can bestow most passive auras, but they usually do not benefit from them.
Contents
Positive auras[edit]
Heroes
Radius:
Radius: 1600
Buff Linger Duration: 525
Requires Aghanim's Scepter. Only present while the ability is active. Anytime an ally takes more than 1600 damage while within range of Abaddon, an individual Mist Coil will automatically fire towards that ally.
Radius: 300
Evasion: 100%
Attack Speed Bonus: 50/60/70/80
Buff Linger Duration: 0.1
Only present while the ability is active. Centered at the targeted point. The evasion only works against attacks from outside the field. Only affects heroes and buildings.
Radius: 1200
Attack Speed Bonus: 10/20/30/40 (
30/40/50/60)
Buff Linger Duration: 0.5
Affects invulnerable units.
Speed Radius: 1200
Self Move Speed Bonus: 16%/20%/24%
Ally Gold Radius: 1200
Allied Bonus Gold: 40/80/120 ( 290/330/370)
Buff Linger Duration: 0.5
Centered around the targeted unit. Allies only get the bonus gold if they are within 1200 range of the tracked hero while alive.
Radius: 900
Health Regen Bonus: 3/5/7/9
Move Speed Bonus: 25%/35%/45%/55% (
35%/50%/65%/80%)
Buff Linger Duration: 0.2
Centered around every web. Only affects the caster and all Spiderlings and Spiderites under their control.
Radius: 15/30/45/60 ( 65/80/95/110)
Retaliate Damage: 20%/25%/30%/35% ( )
Buff Linger Duration:
Requires a level 25 talent to affect allied heroes. Only affects heroes and creep-heroes. Retaliate is an aura by default but affects only self until the talent is chosen.
Radius: 1.25/2.5/3.75/5
Heal and Health Regen Amplification: 6%/10%/14%/18%
Aura Linger Duration: 0.5
Buff Linger Duration:
Radius: Global
Mana Regen Bonus: 0.5/1/1.5/2
Self Bonus Factor: 3 ( )
Aura Linger Duration: 0.5
Buff Linger Duration:
Radius: 600
Move Speed Bonus: 9%/11%/13%/15% ( 19%/21%/23%/25%)
Buff Linger Duration: 0.5
Only present while the ability is active. The damage is independent from the aura. Buff stops lingering once the duration is over.
Radius: 1200
Agility as Ranged Agility Bonus: 25%/35%/45%
Buff Linger Duration:
Aura is disabled if there is an enemy hero within 400 range of Drow Ranger. Only affects ranged heroes and ranged creep-heroes. Affects invulnerable units.
Radius: 500
Max Health as Health Regen Bonus: 2%/3%/4%/5%
Buff Linger Duration: 2.5
Centered around the summoned ward.
Radius: 1200
Attack Damage Bonus: 5/15/25/35
Night Vision Bonus: 250/500/750/1000
Buff Linger Duration:
Affects invulnerable units.
Radius: Global
Attack Damage Bonus: 12%/22%/32%/42% ( 37%/47%/57%/67%)
Health Regen Bonus: 2/4/6/8 ( 10/12/14/16)
Buff Linger Duration: 0.5
Only affects Lycan and units under his control.
Radius: Global
Haste Speed: 650
Critical Chance: 40% ( 72%)
Critical Damage: 150%/175%/200%
Buff Linger Duration: 0.1
Only affects Lycan and units under his control.
Radius: 1000/1200/1400
Aura Linger Duration:
Duration: 7
Requires Aghanim's Scepter. Only present while the ability is active. Affects invulnerable allies but not buildings.
Radius:
Duration: 180
Buff Linger Duration:
Requires Aghanim's Scepter. Only present while the ability is active. Centered at the targeted point. Turns all of Techies' mines invisible and immune to True Sight.
Radius: 1200
Buff Linger Duration: 40/44/48/52
Only present while the ability is active. Causes all illusions owned by Terrorblade to enter Metamorphosis form.
Radius: 900
Attack Damage Bonus per Non-Hero Death: 2/4/6/8
Attack Damage Bonus Duration: 30/45/60/75
Buff Linger Duration:
Requires Aghanim's Scepter. Grants allies attack damage based on the stacks Underlord has. Allies receive half the damage Underlord does.
Radius: 1200
Attack Damage Bonus: 11%/18%/25%/32%
Aura Linger Duration: 0.5 ( )
Buff Linger Duration:
Affects invulnerable allies.
Radius: 1200
Damage Reduction per Layer: 8%/12%/16%/20%
Max Layers: 4 ( 9)
Buff Linger Duration: 0.5
Based on the current amount of layer charges on Visage. Only affects Familiars under Visage's control.
Radius: 500
Base Heal per Second: 16/24/32/40
Mana Cost per Second: 8/12/16/20
Aura Linger Duration: 0.5 ( )
Buff Linger Duration:
Can be toggled on and off. The heal is provided by an aura. The mana cost is also depending on the aura.
Radius: 1200
Wraith Delay Attack Speed Bonus: 75
Buff Linger Duration: 25%
Requires Aghanim's Scepter. Causes allies within 1200 radius of Wraith King to become wraiths when slain, delaying their death.
Non-heroes
Radius: 1200
Attack Damage Bonus: 30%
Buff Linger Duration: 0.5
Radius: 1200
Armor Bonus: 3
Buff Linger Duration: 0.5
Multiple sources of Dragonhide Aura fully stack with each other.
Radius: 1200
Health Bonus: 15%
Buff Linger Duration: 0.5
Radius: 1200
Lifesteal: 10%
Health Regen Bonus: 10
Buff Linger Duration: 0.5
Multiple sources of Prowler Aura fully stack with each other.This is an old ability.
Radius: 1200
Accuracy: 40%
Attack Speed Bonus: 25
Buff Linger Duration: 0.5
Radius: 1200
Hero Magic Resistance Bonus: 10%
Non-Hero Magic Resistance Bonus: 20%
Buff Linger Duration: 0.5
Radius: 1200
Max Health as Regen Bonus: 5%
Max Mana as Regen Bonus: 6%
Buff Linger Duration: 3
Centered around the fountain. The aura also provides invulnerability for couriers and refills Bottles. Affects invulnerable units.
Radius: 1200
Hero Magic Resistance Bonus: 10%
Non-Hero Magic Resistance Bonus: 20%
Buff Linger Duration: 0.5
Radius: 1200
Attack Speed Bonus: 15
Buff Linger Duration: 0.5
Radius: 1200
Mana Regen Bonus: 2.5
Buff Linger Duration: 0.5
Radius: 1200
Move Speed Bonus: 12%
Buff Linger Duration: 0.5
Radius: 1200
Health Regen Bonus: 5
Buff Linger Duration: 0.5
Radius: 900
Armor Bonus (Tier 1): 3
Armor Bonus (Tier 2/3/4): 5
Health Regen Bonus (Tier 1): 1
Health Regen Bonus (Tier 2/3/4): 3
Buff Linger Duration: 0.5
Affects invulnerable but not hidden heroes.
Radius: 1200
Armor Bonus: 3
Buff Linger Duration: 0.5
Items
Radius: 1200
Allies Attack Speed Bonus: 30
Allies Armor Bonus: 5
Buff Linger Duration: 0.5
Affects buildings and invulnerable units.
Radius: 1200
Armor Bonus: 2
Buff Linger Duration: 0.5
Only affects player-controlled units.
Radius: 1200
Health Regeneration Bonus: 2.5
Armor Bonus: 3
Boost Health Threshold: 20%
Boosted Health Regeneration Bonus: 16
Boosted Armor Bonus: 10
Buff Linger Duration: 0.5
The boost only affects heroes.
Radius: 1200
Health Regeneration Bonus: 2
Buff Linger Duration: 0.5
Radius: Global
Illusions and Units Attack Damage Bonus: 8%
Buff Linger Duration: 0.5
Radius: 1200
Health Regeneration Bonus: 2
Aura Linger Duration: 0.5
Buff Linger Duration:
Radius: 1200
Health Regeneration Bonus: 2
Magic Resistance Bonus: 10%
Buff Linger Duration: 0.5
Radius: 1200
Mana Regeneration Bonus: 1.25
Armor Bonus: 2
Buff Linger Duration: 0.5
Can be toggled to not affect creeps.
Radius: 1200
Mana Regeneration Bonus: 1.4
Buff Linger Duration: 0.5
Radius: 1200
Attack Range Bonus (Ranged): 135
Cast Range Bonus: 135
Buff Linger Duration: 0.5
Radius: 1200
Mana Regeneration Bonus: 1.5
Buff Linger Duration: 0.5
Radius: 1200
Lifesteal: 15%
Mana Regeneration Bonus: 1.4
Attack Damage Bonus: 18%
Buff Linger Duration: 3
Affects invulnerable units.
Negative auras[edit]
Heroes
Radius: 475/525/575/625
Armor Reduction: 4/5/6/7
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered at the targeted point. The damage is independent from the aura.
Radius: 275
Move Speed Slow: 15%/20%/25%/30% ( 21%/26%/31%/36%)
Magic Resistance Reduction: 15%/20%/25%/30% ( 21%/26%/31%/36%)
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered at the targeted point.
Radius: 350
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered at the targeted point. The aura provides slow. The aura provides True Sight when the talent is chosen.
Radius: 500
Debuff Linger Duration: 0
Only present while the ability is active. Centered at the targeted point. The aura provides silence. Mute requires Aghanim's Scepter. The damage is independent from the aura.
Radius: 350
Base Armor Reduction: 40%/60%/80%/100%
Base Magic Resistance Reduction: 40%/60%/80%/100%
Debuff Linger Duration: 1
Armor reduction is centered around Elder Titan, while magic resistance reduction is centered around the Astral Spirit. Both are centered on Elder Titan if the spirit is not summoned/learned.
Radius: 420
Pull Speed: 30
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered at the targeted point. The disable and pull are provided by the aura. The damage is independent from the aura. Debuff stops lingering once the duration is over.
Radius: 400
Enemy Move Speed Slow (Quas): 20%/25%/30%/35%/40%/45%/50% ( /55%)
Debuff Linger Duration: 2
Only present while the ability is active.
Wall Length: 1120
Wall Width: 105
Move Speed Slow (Quas): 20%/40%/60%/80%/100%/120%/140% ( /160%)
Debuff Linger Duration: 2
Only present while the ability is active. The damage is independent from the aura.- Radius: 1000/1200/1400
Debuff Linger Duration: 7
Only present while the ability is active. Disables affected units and turns them invulnerable. Affects invulnerable units and buildings. 
Radius: 750
Enemy Move Speed Slow: 6%/12%/18%/24% ( 30%/36%/42%/48%)
Debuff Linger Duration: 0.5
Only present while the ability is active.
Radius: 800
Max Health Lost per Second: 0.6%/1.2%/1.8%/2.4% ( 1.1%/1.7%/2.3%/2.9%)
Ghost Shroud Damage Multiplier: 1 ( 2)
Stacks per Hero Kill: 6 ( )
Debuff Linger Duration:
The status debuff icon is only visible when the affected unit has vision over the source.
Radius: 375
Debuff Linger Duration: 0.5
Only present while the ability is active. Silences affected units.
Radius: 375
Move Speed Slow: 10%/18%/26%/34% ( 25%/33%/41%/49%)
Aura Linger Duration: 1 ( )
Debuff Linger Duration:
Radius: 6/8/10
Stun Duration: 2/2.5/3
Debuff Linger Duration: 6
Only present while the ability is active. The stun is independent from the aura.
Radius: 250
Damage per Second: 30/60/90/120 ( )
Move Speed Slow: 14%/20%/26%/32% ( 28%/34%/40%/46%)
Debuff Linger Duration: 0.5
Can be toggled on and off. The self-damage is independent from the aura.
Radius: 1600
Max Mana as Mana Regen Reduction: 0.6%/0.8%/1%/1.2%
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered around the summoned ward. The Mana Flare is independent from the aura.
Radius: 300/325/350/375 ( 425/450/475/500)
Miss Chance: 20%/35%/50%/65%
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered at the targeted point. The silence is bound to the aura as well.
Radius: 425/500/575/650
Sand Storm Duration: 20/25/30/35 ( )
Aura Linger Duration: 0.5 ( )
Debuff Linger Duration:
Only present while the ability is active. Centered at the targeted point.
Radius: 1200
Armor Reduction: 4/5/6/7
Debuff Linger Duration: 0.5
Has no effect on enemies that have no vision of Shadow Fiend.
Radius: 450
Damage per Second: 20/35/50/65 ( 44/59/74/89)
Move Speed Slow: 12%/18%/24%/30%
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered at the targeted point.
Radius: 200
Move Speed Slow per 5% Max Health Missing: 5%
Debuff Linger Duration: 0.5
Only present while the Chakram is stationary. Centered at the targeted point. The slow increases by 5% for every 5% of health missing, starting at 100%–96% health. The damage is independent from the aura.
Radius: 200
Move Speed Slow per 5% Max Health Missing: 5%
Debuff Linger Duration: 0.5
Only present while the Chakram is stationary. Centered at the targeted point. The slow increases by 5% for every 5% of health missing, starting at 100%–96% health. The damage is independent from the aura.
Radius: 1500
Vines Radius: 135
Damage per Second: 30/40/50/60 ( 54/64/74/84)
Tree Contact Damage Increase: 50%
Move Speed Slow: 25%/30%/35%/40%
Debuff Linger Duration: 0.5
Only present while the ability is active. Aura is applied by each thicket in the path. There are 2 different modifiers, "Natures Grasp Damage" is used by regular thickets, and "Natures Grasp Damage Bonus" is used by thickets boosted by trees.
Radius: 350
Attack Damage Bonus on Proc: 25/50/75/100
Move Speed Slow: 75%
Slow Duration: 0.4
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered around Tusk.- Radius: 900
Attack Damage Reduction: 5%/15%/25%/35%
Debuff Linger Duration:
Affects invulnerable units. 
Radius: 400
Min Damage per Second: 15/20/25/30
Max Damage per Second: 80/100/120/140
Max Damage Duration: 4
Damage Interval: 0.5
Debuff Linger Duration: 0.5
Only present while the ability is active. Deals damage in 0.5-second intervals, starting 0.5 seconds after receiving the debuff. The damage increases by 4.06/5/5.94/6.88 for each 0.5 seconds spent within the area. Breaks affected units. Silences affected units when the talent is chosen.
Radius: 325
Move Speed Slow: 15%/20%/25%/30%
Debuff Linger Duration: 3/4/5/6
Only present while the ability is active.
Radius: 500
Curse Damage Reduction: 100%
Curse Attack Speed Bonus: 55
Debuff Linger Duration: Indefinite
Taunts allies of the cursed target. The taunt lasts until the curse expires, or until the cursed target or taunted unit dies, whichever is shorter.
Radius: 750
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered at the targeted point. The aura provides True Sight.
Radius: 900
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered around every affected enemy hero. The aura provides True Sight.
Non-heroes
Radius: 900
Debuff Linger Duration: 0.5
Centered around the Ancient. The aura provides True Sight.
Radius: 220
Damage per Second: 25/50/75
Debuff Linger Duration: 0.5- Radius: 1200
Debuff Linger Duration: 0.5
Centered around the Fountain. The aura provides True Sight. 
Radius: 1000
Debuff Linger Duration: 0.5
The aura provides True Sight.
Radius: 700
Debuff Linger Duration: 0.5
Centered around the Outpost. The aura provides True Sight.
Radius: 1000
Debuff Linger Duration: 0.5
Centered around the placed ward. The aura provides True Sight.
Radius: 600
Move Speed Slow: 15%
Attack Speed Slow: 15
Debuff Linger Duration: 0.5
Centered around the tornado. The damage is independent from the aura.- Radius: 700
Debuff Linger Duration: 0.5
Centered around every tower. The aura provides True Sight. 
Radius: 300
Damage per Second: 30/50/70
Debuff Linger Duration: 0.5
Multiple Permanent Immolation auras from Warlock Golems fully stack.
Items
- Radius: 1200
Enemy Armor Reduction: 5
Debuff Linger Duration: 0.5
The status debuff icon is only visible when the affected unit has vision over the source. Affects buildings and invulnerable units. 
Radius: 900
Debuff Linger Duration: 0.5
The aura provides True Sight.
Radius: 700
Damage per Second (Hero): 60
Damage per Second (Illusion): 35
Miss Chance: 17%
Debuff Linger Duration: 0.5
Can be toggled on and off.
Radius: 1200
Attack Speed Slow: 45
Debuff Linger Duration: 25%
The status debuff icon is only visible when the affected unit has vision over the source.
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