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: 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: 15/25/35/45 (
55/65/75/85)
Buff Linger Duration: 0.5
Affects invulnerable units.
Self Speed Radius: 900
Self Move Speed Bonus: 16%/18%/20%
Allied Gold Radius: 1200
Allied Bonus Gold: 40/80/120 ( 340/380/420)
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%/40%/55%/70%
Buff Linger Duration: 0.2
Centered around every web. Only affects the caster, and all Spiderlings and Spiderites under their control.
Radius: 0 ( 1200)
Retaliate Damage: 16/32/48/64 ( 66/82/98/114)
Buff Linger Duration: 0.5
Requires a level 25 talent. Affects heroes and creep-heroes only.
Radius: Global
Allies Mana Regen Bonus: 1.2/1.7/2.2/2.7
Self Mana Regen Bonus: 2.4/4.4/6.4/8.4
Mana Loss Reduction: 0% ( 14%)
Buff Linger Duration: 0.5
Radius: 600
Damage per Second: 20/30/40/50 ( 40/50/60/70)
Move Speed Bonus: 11%/12%/13%/14% ( 27%/28%/29%/30%)
Buff Linger Duration: 0.5
Only present while the ability is active. Affects units under Doom's control only. The damage is independent from the aura. Buff stops lingering once the duration is over.
Radius: 500
Max Health as Heal per Second: 2%/3%/4%/5%
Buff Linger Duration: 2.5
Centered around the summoned ward.
Radius: 1200
Attack Damage Bonus: 10%/15%/20%/25%
Total Armor Bonus: 10%/15%/20%/25%
Night Vision Bonus: 200/400/600/800
Aura Linger Duration: 0.5
Affects invulnerable and hidden units.
Radius: 1200
Attack Damage Bonus: 12%/24%/36%/48% ( 28%/40%/52%/64%)
Health Regeneration Bonus: 1/3/5/7 ( 9/11/13/15)
Buff Linger Duration: 0.5
Affects units under Lycan's control only.
Radius: Global
Haste Speed: 650
Critical Chance: 40% ( 80%)
Critical Damage: 150%/175%/200%
Buff Linger Duration: 0.1
Affects units under Lycan's control only.
Radius: 1000/1200/1400
Max Health as Heal per Second: 10%
Buff Linger Duration: 0.4
Requires Aghanim's Scepter. Only present while the ability is active. Affects invulnerable allies, but not buildings.
Radius: 325
Invisibility Fade Delay: 0
Buff Linger Duration: 0.5
Requires Aghanim's Scepter. Only present while the ability is active. Centered on the caster. Turns the caster and all nearby allied heroes invisible and immune to True Sight.
Radius: 1200
Allies Attack Damage Bonus: 75%/100%/125%
Buff Linger Duration: 0.5
Requires Aghanim's Scepter. Only present while the ability is active. Affects allied heroes.
Radius: 125
Invisibility Fade Delay: 0
Buff Linger Duration: 0.5
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: 1
Only present while the ability is active. Causes all illusions owned by Terrorblade to enter Metamorphosis form.
Radius: 1200
Attack Damage Bonus per Hero Death: 30/35/40/45 ( 45/50/55/60)
Attack Damage Bonus per Non-Hero Death: 5
Buff Linger Duration: 0.5
Requires Aghanim's Scepter. Grants allies attack damage based on the stacks Underlord has. Allies receive half the damage Underlord does.
Radius: 1200
Ranged Attack Range Bonus: 50/75/100/125
Primary Attribute Bonus: 4/7/10/13 ( 12/15/18/21)
Buff Linger Duration: 0.5
Affects invulnerable allies.
Radius: 1200
Damage Reduction per Layer: 8%/12%/16%/20%
Max Layers: 4
Buff Linger Duration: 0.5
Based on the current amount of layer charges on Visage. Affects Familiars under Visage's control only.
Radius: 500
Heal per Second: 16/24/32/40 ( 36/44/52/60)
Buff Linger Duration: 0.5
Can be toggled on and off.
Radius: 1200
Lifesteal: 6/12/18/24 ( )
Buff Linger Duration: 0.5
Affects invulnerable units. Can be toggled to not affect creeps.
Radius: 1200
Wraith Duration: 7
Buff Linger Duration: 0.5
Requires Aghanim's Scepter. Causes allies within 1200 radius of Wraith King to become wraiths when slain, delaying their death.
Non-heroes
Radius: 900
Attack Damage Bonus: 30%
Buff Linger Duration: 0.5
Radius: 900
Armor Bonus: 3
Buff Linger Duration: 0.5
Multiple sources of Dragonhide Aura fully stack with each other.
Radius: 900
Health Bonus: 15%
Buff Linger Duration: 0.5
Radius: 900
Lifesteal: 10%
Health Regen Bonus: 10
Buff Linger Duration: 0.5
Multiple sources of Prowler Aura fully stack with each other.
Radius: 900
Attack Damage Bonus: 15%
Attack Speed Bonus: 15
Buff Linger Duration: 0.5
Radius: 900
Hero Magic Resistance Bonus: 5%
Non-Hero Magic Resistance Bonus: 20%
Buff Linger Duration: 0.5
Radius: 900
Hero Magic Resistance Bonus: 5%
Non-Hero Magic Resistance Bonus: 20%
Buff Linger Duration: 0.5
Radius: 900
Attack Speed Bonus: 15
Buff Linger Duration: 0.5
Radius: 900
Mana Regen Bonus: 1.5
Buff Linger Duration: 0.5
Radius: 900
Move Speed Bonus: 12%
Buff Linger Duration: 0.5
Radius: 900
Move Speed Bonus: 5%/7%/9%
Attack Speed Bonus: 5/7/9
Buff Linger Duration: 0.5
Radius: 1200
Health Regen Bonus: 5
Buff Linger Duration: 0.5
Aura Radius: 500
Health Regen Bonus: 75
Mana Regen Bonus: 30
Aura Linger Duration: 0.5
Only present while the ability is active. Centered around the shrine.
Radius: 900
Armor Bonus: 1/3/3/3
Buff Linger Duration: 0.5
Tier 1 towers provide 1 armor, tier 2/3/4 provide 3 armor.
Radius: 900
Armor Bonus: 3
Buff Linger Duration: 0.5
Items
Radius: 1200
Attack Speed Bonus: 25
Armor Bonus: 5
Buff Linger Duration: 0.5
Affects buildings and invulnerable units.
Radius: 1200
Health Regen Bonus: 3.5
Armor Bonus: 2
Boost Health Threshold: 20%
Boosted Armor Bonus: 10
Boosted Health Regen Bonus: 16
Buff Linger Duration: 0.5
The boost only affects heroes.
Radius: 1200
Health Regen Bonus: 2
Buff Linger Duration: 0.5
Radius: 1200
Attack Damage Bonus: 20%
Health Regen Bonus: 5
Non-Hero Aura Bonus: 50%
Buff Linger Duration: 0.5
Radius: 1200
Health Regen Bonus: 3.5
Buff Linger Duration: 0.5
Radius: 1200
Health Regen Bonus: 2
Magic Resistance Bonus: 10%
Buff Linger Duration: 0.5
Radius: 1200
Mana Regen Bonus: 0.5
Armor Bonus: 2
Buff Linger Duration: 0.5
Can be toggled to not affect creeps.
Radius: 1200
Mana Regen Bonus: 0.75
Armor Bonus: 2
Buff Linger Duration: 0.5
Can be toggled to not affect creeps.
Radius: 1200
Melee Lifesteal: 15%
Ranged Lifesteal: 10%
Attack Damage Bonus: 15%
Mana Regen Bonus: 1.5
Armor Bonus: 4
Buff Linger Duration: 0.5
Affects invulnerable units.
Negative auras[edit]
Heroes
Radius: 625
Armor Reduction: 4/5/6/7 ( 8/9/10/11)
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%
Magic Resistance Reduction: 15%/20%/25%/30%
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered at the targeted point.
Radius: 408
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered at the targeted point. The aura provides slow.
Radius: 450
Debuff Linger Duration: 0.01
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: 325
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: 40
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
Move Speed Slow: 20%/25%/30%/35%/40%/45%/50% (
/55%)
Debuff Linger Duration: 2
Only present while the ability is active.
Wall Length: 1200
Wall Width: 105
Move Speed Slow: 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: 1250
Debuff Linger Duration: 0.4
Only present while the ability is active. Disables affected units and turns them invulnerable. Affects invulnerable units and buildings. 
Radius: 600
Enemy Move Speed Slow: 12%/20%/28%/36%
Debuff Linger Duration: 0.5
Only present while the ability is active.
Radius: 900
Max Health Lost per Second: 0.6%/1%/1.4%/1.8%
Debuff Linger Duration: 0.5
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: 275
Move Speed Slow: 10%/18%/26%/34% ( 22%/30%/38%/46%)
Attack Speed Slow: 10/18/26/34 ( 22/30/38/46)
Debuff Linger Duration: 1
Radius: 1000
Damage per Second: 60/90/120
Debuff Linger Duration: 0.5
Only present while the ability is active. The stun is independent from the aura.
Radius: 250
Damage per Second: 30/60/90/120 ( 150/180/210/240)
Move Speed Slow: 30%
Debuff Linger Duration: 0.5
Can be toggled on and off. The self-damage is independent from the aura.
Radius: 1600
Max Mana Loss per Second: 0.25%/0.5%/0.75%/1%
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: 250/275/300/325
Miss Chance: 40%/50%/60%/70%
Move Speed Slow: 10%/15%/20%/25%
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: 525
Miss Chance: 0% ( 50%)
Move Speed Slow: 0% ( 50%)
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered at the targeted point.
Radius: 900
Armor Reduction: 3/4/5/6
Debuff Linger Duration: 0.5
Has no effect on enemies that have no vision of Shadow Fiend.
Radius: 450
Damage per Second: 15/35/55/75 ( 35/55/75/95)
Move Speed Slow: 15%/20%/25%/30%
Debuff Linger Duration: 0.5
Only present while the ability is active. Centered at the targeted point.
Radius: 200
Move Speed Slow: 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: 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: 350
Attack Damage Bonus: 25/50/75/100
Movement Speed Slow: 75%
Slow Duration: 0.5
Aura Duration: 5
Aura Linger Duration: 0.5
Only present while the ability is active. Centered around Tusk- Radius: 900
Attack Damage Reduction: 10%/20%/30%/40%
Debuff Linger Duration: 0.5
Affects invulnerable units. 
Radius: 750
Min Damage Amplification: 1%
Max Damage Amplification: 20%/25%/30%
Min Move Speed Slow: 1%
Max Move Speed Slow: 20%
Own Max Health as Heal per Hero Death: 10%
Own Max Health as Heal per Non-Hero Death: 2%
Debuff Linger Duration: 0.5
Only present while the ability is active. The damage amplification and slow are strongest within a 200 radius around Undying and get linearly weaker the further away units are from him, reaching the minimum at 750 range.
Radius: 300
Move Speed Slow: 8%/16%/24%/30%
Debuff Linger Duration: 2.5
Only present while the ability is active.
Radius: 500
Incoming Damage Reduction: 100%
Enemy Attack Speed Bonus: 70
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: 15/30/45
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: 850
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: 30/40/50
Debuff Linger Duration: 0.5
Multiple Permanent Immolation auras from Warlock's Golems fully stack.
Items
- Radius: 900
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: 60
Damage per Second by Illusions: 35
Enemy Miss Chance: 17%
Debuff Linger Duration: 0.5
Can be toggled on and off.
Radius: 900
Attack Speed Slow: 45
Debuff Linger Duration: 0.5
The status debuff icon is only visible when the affected unit has vision over the source.
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