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Attack damage ( ) is the amount of damage a unit is shown to deal with a regular attack. A unit's total attack damage is the sum of its main attack damage (white) and bonus attack damage (green). Attack damage is and can be modified by many different effects in the game, and ends up going through a number of steps in order to determine how much damage an attack actually deals as its overall or total attack damage.

Total Attack Damage[]

Properties of a level 1 Sniper minimap icon.png Sniper with Blades of Attack icon.png Blades of Attack: Sniper's base attack damage varies by 6; main attack damage is white, bonus attack damage green.

Calculating the total damage of an attack involves using many different multipliers and values. Total attack damage is synonymous with how much health a target immediately loses as a direct result of the attack. Some on-hit effects that are not affected by critical strike are still considered part of attack damage, and some are not.

With Am being the Main Attack Damage, Abonus being the Bonus Attack Damage, CMu being the Critical Strike Multiplier, RTMu being the Defense Class Damage Multiplier and DMu being the Damage Multiplier.

ACon being Conditional Bonus sources (e.g. Mana Break sources).

Total Attack Damage Sources[]

The following abilities reduces the affected unit's damage before damage block is applied.

1 Main attack damage is only reduced for the instant attack, so that only the ability can use it.

Main Attack Damage[]

Main attack damage is the damage value shown in white numbers on a hero's statistics consisting of the base attack damage with the damage granted by a hero's primary attribute on top. A hero's main attack damage can only be increased by raising its primary attribute, or by very few specific abilities.

Attribute points can be acquired by leveling up, or by using specific items, abilities, or Talent talents that grants bonus attributes.

Primary Attribute Main Attack Damage/Point
Strength attribute symbol.png Strength +1
Agility attribute symbol.png Agility +1
Intelligence attribute symbol.png Intelligence +1

Main Attack Damage is defined as:

With Am being the main attack damage, AB being the base attack damage, p being the hero's primary attribute and other main attack damage sources from abilities. For a detailed table of all 122 heroes' main attack damage, please refer to this page.

Main Attack Damage Sources[]

Increasing Sources[]

The following items and abilities manipulates the primary attribute of the hero, and therefore increasing its main attack damage.

Main Attack Damage Increasing Sources
Strength attribute symbol.png Strength[]
Strength Items
Item Value Item Cost Cost/Value Point
Abyssal Blade icon.png Abyssal Blade 35 6325 Gold 180.71 Gold
Aghanim's Scepter icon.png Aghanim's Scepter 10 4200 Gold 420 Gold
Armlet of Mordiggian (Inactive) icon.png Armlet of Mordiggian 75 2500 Gold 33.33 Gold
Belt of Strength icon.png Belt of Strength 6 450 Gold 75 Gold
Black King Bar icon.png Black King Bar 34 4050 Gold 119.12 Gold
Book of Shadows icon.png Book of Shadows 12 N/A N/A
Book of the Dead icon.png Book of the Dead 30 N/A N/A
Bracer icon.png Bracer 8 505 Gold 63.13 Gold
Circlet icon.png Circlet 2 155 Gold 77.5 Gold
Crown icon.png Crown 4 450 Gold 112.5 Gold
Dagon 1 icon.png Dagon 1 6 2700 Gold 450 Gold
Dagon 2 icon.png Dagon 2 8 3950 Gold 493.75 Gold
Dagon 3 icon.png Dagon 3 10 5200 Gold 520 Gold
Dagon 4 icon.png Dagon 4 12 6450 Gold 537.5 Gold
Dagon 5 icon.png Dagon 5 14 7700 Gold 550 Gold
Dragon Lance icon.png Dragon Lance 12 1900 Gold 158.33 Gold
Drum of Endurance icon.png Drum of Endurance 7 1700 Gold 242.86 Gold
Echo Sabre icon.png Echo Sabre 28 2500 Gold 89.29 Gold
Ethereal Blade icon.png Ethereal Blade 10 4300 Gold 430 Gold
Eye of Skadi icon.png Eye of Skadi 25 5300 Gold 212 Gold
Fallen Sky icon.png Fallen Sky 20 N/A N/A
Gauntlets of Strength icon.png Gauntlets of Strength 3 140 Gold 46.67 Gold
Ghost Scepter icon.png Ghost Scepter 5 1500 Gold 300 Gold
Giant's Ring icon.png Giant's Ring 35 N/A N/A
Gleipnir icon.png Gleipnir 44 6150 Gold 139.77 Gold
Heart of Tarrasque icon.png Heart of Tarrasque 45 5000 Gold 111.11 Gold
Heaven's Halberd icon.png Heaven's Halberd 20 3550 Gold 177.5 Gold
Helm of the Dominator icon.png Helm of the Dominator 6 2400 Gold 400 Gold
Helm of the Overlord icon.png Helm of the Overlord 7 6325 Gold 903.57 Gold
Holy Locket icon.png Holy Locket 3 2400 Gold 800 Gold
Hurricane Pike icon.png Hurricane Pike 15 4450 Gold 296.67 Gold
Iron Branch icon.png Iron Branch 1 50 Gold 50 Gold
Kaya and Sange icon.png Kaya and Sange 16 4100 Gold 256.25 Gold
Linken's Sphere icon.png Linken's Sphere 16 4600 Gold 287.5 Gold
Magic Wand icon.png Magic Wand 3 450 Gold 150 Gold
Manta Style icon.png Manta Style 10 4600 Gold 460 Gold
Meteor Hammer icon.png Meteor Hammer 8 2350 Gold 293.75 Gold
Mirror Shield icon.png Mirror Shield 10 N/A N/A
Null Talisman icon.png Null Talisman 2 505 Gold 252.5 Gold
Ocean Heart icon.png Ocean Heart 5 N/A N/A
Ogre Axe icon.png Ogre Axe 10 1000 Gold 100 Gold
Overwhelming Blink icon.png Overwhelming Blink 25 6800 Gold 272 Gold
Pig Pole icon.png Pig Pole 6 N/A N/A
Power Treads (Strength) icon.png Power Treads (Strength) 10 1400 Gold 140 Gold
Reaver icon.png Reaver 25 2800 Gold 112 Gold
Ring of Aquila (Active) icon.png Ring of Aquila 10 N/A N/A
Rod of Atos icon.png Rod of Atos 12 2750 Gold 229.17 Gold
Sange icon.png Sange 16 2050 Gold 128.13 Gold
Sange and Yasha icon.png Sange and Yasha 16 4100 Gold 256.25 Gold
Satanic icon.png Satanic 70 5050 Gold 72.14 Gold
Scythe of Vyse icon.png Scythe of Vyse 10 5675 Gold 567.5 Gold
Skull Basher icon.png Skull Basher 35 2875 Gold 82.14 Gold
Solar Crest icon.png Solar Crest 5 2625 Gold 525 Gold
Soul Ring icon.png Soul Ring 6 680 Gold 113.33 Gold
Spell Prism icon.png Spell Prism 6 N/A N/A
Spirit Vessel icon.png Spirit Vessel 2 2840 Gold 1420 Gold
Ultimate Orb icon.png Ultimate Orb 10 2050 Gold 205 Gold
Urn of Shadows icon.png Urn of Shadows 2 840 Gold 420 Gold
Vambrace (Agility) icon.png Vambrace (Agility) 5 N/A N/A
Vambrace (Intelligence) icon.png Vambrace (Intelligence) 5 N/A N/A
Vambrace (Strength) icon.png Vambrace (Strength) 10 N/A N/A
Veil of Discord icon.png Veil of Discord 4 1525 Gold 381.25 Gold
Wraith Band icon.png Wraith Band 2 505 Gold 252.5 Gold
Values may include portions from actives or auras.
Agility attribute symbol.png Agility[]
Agility Items
Item Value Item Cost Cost/Value Point
Aghanim's Scepter icon.png Aghanim's Scepter 10 4200 Gold 420 Gold
Band of Elvenskin icon.png Band of Elvenskin 6 450 Gold 75 Gold
Blade of Alacrity icon.png Blade of Alacrity 10 1000 Gold 100 Gold
Book of Shadows icon.png Book of Shadows 12 N/A N/A
Bracer icon.png Bracer 5 505 Gold 101 Gold
Butterfly icon.png Butterfly 55 4975 Gold 90.45 Gold
Circlet icon.png Circlet 2 155 Gold 77.5 Gold
Crown icon.png Crown 4 450 Gold 112.5 Gold
Dagon 1 icon.png Dagon 1 6 2700 Gold 450 Gold
Dagon 2 icon.png Dagon 2 8 3950 Gold 493.75 Gold
Dagon 3 icon.png Dagon 3 10 5200 Gold 520 Gold
Dagon 4 icon.png Dagon 4 12 6450 Gold 537.5 Gold
Dagon 5 icon.png Dagon 5 14 7700 Gold 550 Gold
Diffusal Blade 1 icon.png Diffusal Blade 24 3150 Gold 131.25 Gold
Dragon Lance icon.png Dragon Lance 16 1900 Gold 118.75 Gold
Eaglesong icon.png Eaglesong 25 2800 Gold 112 Gold
Ethereal Blade icon.png Ethereal Blade 40 4300 Gold 107.5 Gold
Eye of Skadi icon.png Eye of Skadi 25 5300 Gold 212 Gold
Ghost Scepter icon.png Ghost Scepter 5 1500 Gold 300 Gold
Gleipnir icon.png Gleipnir 44 6150 Gold 139.77 Gold
Helm of the Dominator icon.png Helm of the Dominator 6 2400 Gold 400 Gold
Helm of the Overlord icon.png Helm of the Overlord 7 6325 Gold 903.57 Gold
Holy Locket icon.png Holy Locket 3 2400 Gold 800 Gold
Hurricane Pike icon.png Hurricane Pike 20 4450 Gold 222.5 Gold
Iron Branch icon.png Iron Branch 1 50 Gold 50 Gold
Linken's Sphere icon.png Linken's Sphere 16 4600 Gold 287.5 Gold
Magic Wand icon.png Magic Wand 3 450 Gold 150 Gold
Manta Style icon.png Manta Style 26 4600 Gold 176.92 Gold
Meteor Hammer icon.png Meteor Hammer 8 2350 Gold 293.75 Gold
Mirror Shield icon.png Mirror Shield 10 N/A N/A
Ninja Gear icon.png Ninja Gear 24 N/A N/A
Null Talisman icon.png Null Talisman 2 505 Gold 252.5 Gold
Ocean Heart icon.png Ocean Heart 5 N/A N/A
Pig Pole icon.png Pig Pole 6 N/A N/A
Power Treads (Agility) icon.png Power Treads (Agility) 10 1400 Gold 140 Gold
Ring of Aquila (Active) icon.png Ring of Aquila 16 N/A N/A
Rod of Atos icon.png Rod of Atos 12 2750 Gold 229.17 Gold
Sange and Yasha icon.png Sange and Yasha 16 4100 Gold 256.25 Gold
Scythe of Vyse icon.png Scythe of Vyse 10 5675 Gold 567.5 Gold
Slippers of Agility icon.png Slippers of Agility 3 140 Gold 46.67 Gold
Solar Crest icon.png Solar Crest 5 2625 Gold 525 Gold
Spell Prism icon.png Spell Prism 6 N/A N/A
Spirit Vessel icon.png Spirit Vessel 2 2840 Gold 1420 Gold
Swift Blink icon.png Swift Blink 25 6800 Gold 272 Gold
Ultimate Orb icon.png Ultimate Orb 10 2050 Gold 205 Gold
Urn of Shadows icon.png Urn of Shadows 2 840 Gold 420 Gold
Vambrace (Agility) icon.png Vambrace (Agility) 10 N/A N/A
Vambrace (Intelligence) icon.png Vambrace (Intelligence) 5 N/A N/A
Vambrace (Strength) icon.png Vambrace (Strength) 5 N/A N/A
Veil of Discord icon.png Veil of Discord 4 1525 Gold 381.25 Gold
Wraith Band icon.png Wraith Band 5 505 Gold 101 Gold
Yasha icon.png Yasha 16 2050 Gold 128.13 Gold
Yasha and Kaya icon.png Yasha and Kaya 16 4100 Gold 256.25 Gold
Values may include portions from actives or auras.
Intelligence attribute symbol.png Intelligence[]
Intelligence Items
Item Value Item Cost Cost/Value Point
Aghanim's Scepter icon.png Aghanim's Scepter 10 4200 Gold 420 Gold
Arcane Blink icon.png Arcane Blink 25 6800 Gold 272 Gold
Arcane Ring icon.png Arcane Ring 10 N/A N/A
Bloodstone icon.png Bloodstone 16 5750 Gold 359.38 Gold
Bloodthorn icon.png Bloodthorn 55 6275 Gold 114.09 Gold
Book of Shadows icon.png Book of Shadows 12 N/A N/A
Book of the Dead icon.png Book of the Dead 30 N/A N/A
Bracer icon.png Bracer 5 505 Gold 101 Gold
Circlet icon.png Circlet 2 155 Gold 77.5 Gold
Crown icon.png Crown 4 450 Gold 112.5 Gold
Dagon 1 icon.png Dagon 1 14 2700 Gold 192.86 Gold
Dagon 2 icon.png Dagon 2 16 3950 Gold 246.88 Gold
Dagon 3 icon.png Dagon 3 18 5200 Gold 288.89 Gold
Dagon 4 icon.png Dagon 4 20 6450 Gold 322.5 Gold
Dagon 5 icon.png Dagon 5 22 7700 Gold 350 Gold
Diffusal Blade 1 icon.png Diffusal Blade 12 3150 Gold 262.5 Gold
Drum of Endurance icon.png Drum of Endurance 7 1700 Gold 242.86 Gold
Echo Sabre icon.png Echo Sabre 25 2500 Gold 100 Gold
Essence Ring icon.png Essence Ring 6 N/A N/A
Ethereal Blade icon.png Ethereal Blade 10 4300 Gold 430 Gold
Eul's Scepter of Divinity icon.png Eul's Scepter of Divinity 10 2725 Gold 272.5 Gold
Eye of Skadi icon.png Eye of Skadi 25 5300 Gold 212 Gold
Fallen Sky icon.png Fallen Sky 20 N/A N/A
Force Staff icon.png Force Staff 10 2200 Gold 220 Gold
Ghost Scepter icon.png Ghost Scepter 5 1500 Gold 300 Gold
Gleipnir icon.png Gleipnir 54 6150 Gold 113.89 Gold
Helm of the Dominator icon.png Helm of the Dominator 6 2400 Gold 400 Gold
Helm of the Overlord icon.png Helm of the Overlord 7 6325 Gold 903.57 Gold
Holy Locket icon.png Holy Locket 3 2400 Gold 800 Gold
Hurricane Pike icon.png Hurricane Pike 15 4450 Gold 296.67 Gold
Iron Branch icon.png Iron Branch 1 50 Gold 50 Gold
Kaya icon.png Kaya 16 2050 Gold 128.13 Gold
Kaya and Sange icon.png Kaya and Sange 16 4100 Gold 256.25 Gold
Linken's Sphere icon.png Linken's Sphere 16 4600 Gold 287.5 Gold
Mage Slayer icon.png Mage Slayer 30 2400 Gold 80 Gold
Magic Wand icon.png Magic Wand 3 450 Gold 150 Gold
Manta Style icon.png Manta Style 10 4600 Gold 460 Gold
Mantle of Intelligence icon.png Mantle of Intelligence 3 140 Gold 46.67 Gold
Meteor Hammer icon.png Meteor Hammer 8 2350 Gold 293.75 Gold
Mirror Shield icon.png Mirror Shield 10 N/A N/A
Mystic Staff icon.png Mystic Staff 25 2800 Gold 112 Gold
Null Talisman icon.png Null Talisman 5 505 Gold 101 Gold
Oblivion Staff icon.png Oblivion Staff 25 1500 Gold 60 Gold
Ocean Heart icon.png Ocean Heart 5 N/A N/A
Orchid Malevolence icon.png Orchid Malevolence 50 3475 Gold 69.5 Gold
Pig Pole icon.png Pig Pole 6 N/A N/A
Power Treads (Intelligence) icon.png Power Treads (Intelligence) 10 1400 Gold 140 Gold
Ring of Aquila (Active) icon.png Ring of Aquila 10 N/A N/A
Robe of the Magi icon.png Robe of the Magi 6 450 Gold 75 Gold
Rod of Atos icon.png Rod of Atos 24 2750 Gold 114.58 Gold
Scythe of Vyse icon.png Scythe of Vyse 35 5675 Gold 162.14 Gold
Shiva's Guard icon.png Shiva's Guard 30 4850 Gold 161.67 Gold
Solar Crest icon.png Solar Crest 5 2625 Gold 525 Gold
Spell Prism icon.png Spell Prism 6 N/A N/A
Spirit Vessel icon.png Spirit Vessel 2 2840 Gold 1420 Gold
Staff of Wizardry icon.png Staff of Wizardry 10 1000 Gold 100 Gold
Ultimate Orb icon.png Ultimate Orb 10 2050 Gold 205 Gold
Urn of Shadows icon.png Urn of Shadows 2 840 Gold 420 Gold
Vambrace (Agility) icon.png Vambrace (Agility) 5 N/A N/A
Vambrace (Intelligence) icon.png Vambrace (Intelligence) 10 N/A N/A
Vambrace (Strength) icon.png Vambrace (Strength) 5 N/A N/A
Veil of Discord icon.png Veil of Discord 4 1525 Gold 381.25 Gold
Wind Waker icon.png Wind Waker 35 6825 Gold 195 Gold
Witch Blade icon.png Witch Blade 14 2600 Gold 185.71 Gold
Wraith Band icon.png Wraith Band 2 505 Gold 252.5 Gold
Yasha and Kaya icon.png Yasha and Kaya 16 4100 Gold 256.25 Gold
Values may include portions from actives or auras.
Intelligence Increasing Sources
1 Requires Talent talent.
2a Requires Aghanim's Scepter icon.png Aghanim's Scepter.
2b Requires Aghanim's Shard icon.png Aghanim's Shard.
Talents[]

Reducing Sources[]

Some abilities reduces main attack damage based on percentages, and some abilities manipulates the primary attribute of the hero, and therefore reducing its main attack damage.

1 Requires Talent talent.
2a Requires Aghanim's Scepter icon.png Aghanim's Scepter.
2b Requires Aghanim's Shard icon.png Aghanim's Shard.

Base Attack Damage[]

Base attack damage is the part of the main attack damage that stays the same throughout a game. It consists of two values, a minimum and maximum amount. Every time an attack is issued, a random value between the minimum and maximum is chosen to help decide the damage output.

The most extreme hero example of this is Chaos Knight minimap icon.png Chaos Knight, with his base attack damage ranging between 29 – 59, causing his damage output to be somewhat unpredictable. This range of 30 is always part of his attack calculations, no matter how many attributes or how much bonus attack damage he acquires.

Abilities[]

Base Attack Damage Increasing Sources

Talents[]

The following heroes have a Talent talent that grants them base attack damage.

Bonus Level 10 Level 15 Level 20 Level 25
Left Right Left Right Left Right Left Right
Base Damage
  • Meepo minimap icon.png +20
  • Omniknight minimap icon.png +50
  • Earthshaker minimap icon.png +30
Heroes Talent Bonuses Σ Base Attack Damage
Meepo minimap icon.png +20 42 – 48
Earthshaker minimap icon.png +30 57 – 67
Omniknight minimap icon.png +50 81 – 91

Bonus Attack Damage[]

Bonus attack damage is the attack damage value shown in green numbers with a plus on the left, right after the white attack damage number on a unit's statistics. Whenever a bonus attack damage granting item or ability shows a +Attack Damage, e.g. Blades of Attack icon.png Blades of Attack +9 Damage, it increases the bonus attack damage of the affected unit.

Probably the most important difference between main and bonus attack damage is that illusions only benefit from main attack damage, although their HUD still shows the bonus armor just like on other heroes, to make them less obvious to the enemy.

There are two types of bonus attack damage:


Bonus Attack Damage is defined as:

With Am being the main attack damage, abeing the amplified values and r being the reduction values.

Bonus Attack Damage Sources[]

Increasing Sources[]

Percentage Bonuses[]
Flat Bonuses[]
1 Requires Talent talent.
2a Requires Aghanim's Scepter icon.png Aghanim's Scepter.
2b Requires Aghanim's Shard icon.png Aghanim's Shard.
3 Damage is granted for the ability and is immediately removed afterward, so that only the ability can use it.
4 Although not displayed in the HUD, the bonus damage is directly added to the unit triggering the aura. It is considered by lifesteal, crit or cleave.
Talents[]

The following heroes have a Talent talent that grants them flat bonus attack damage.

Bonus Level 10 Level 15 Level 20 Level 25
Left Right Left Right Left Right Left Right
Damage
  • Sniper minimap icon.png +15
  • Visage minimap icon.png +25
  • Io minimap icon.png +30
  • Winter Wyvern minimap icon.png +35
  • Lion minimap icon.png +60
  • Brewmaster minimap icon.png +15
  • Bristleback minimap icon.png +15
  • Dragon Knight minimap icon.png +15
  • Ember Spirit minimap icon.png +15
  • Medusa minimap icon.png +15
  • Nature's Prophet minimap icon.png +20
  • Queen of Pain minimap icon.png +20
  • Lina minimap icon.png +25
  • Beastmaster minimap icon.png +30
  • Death Prophet minimap icon.png +30
  • Kunkka minimap icon.png +30
  • Dazzle minimap icon.png +50
  • Alchemist minimap icon.png +20
  • Spirit Breaker minimap icon.png +40
  • Lifestealer minimap icon.png +25
  • Enchantress minimap icon.png +45
  • Abaddon minimap icon.png +65
  • Ogre Magi minimap icon.png +80
  • Troll Warlord minimap icon.png +30
  • Viper minimap icon.png +70
  • Techies minimap icon.png +252

The majority of attack damage increasing Talent talents grants bonus attack damage. Therefore, it does not benefit illusions and is not affected by most percentage-based damage increasing or reducing effects.

Items[]
Flat Bonus Attack Damage Increasing Items
Item Value Item Cost Cost/Value Point
Abyssal Blade icon.png Abyssal Blade 25 6325 Gold 253 Gold
Armlet of Mordiggian (Inactive) icon.png Armlet of Mordiggian 50 2500 Gold 50 Gold
Battle Fury icon.png Battle Fury 60 4130 Gold 68.83 Gold
Black King Bar icon.png Black King Bar 24 4050 Gold 168.75 Gold
Blade Mail icon.png Blade Mail 28 2125 Gold 75.89 Gold
Blades of Attack icon.png Blades of Attack 9 450 Gold 50 Gold
Bloodthorn icon.png Bloodthorn 30 6275 Gold 209.17 Gold
Bracer icon.png Bracer 3 505 Gold 168.33 Gold
Brigand's Blade icon.png Brigand's Blade 10 N/A N/A
Broadsword icon.png Broadsword 15 1000 Gold 66.67 Gold
Broom Handle icon.png Broom Handle 14 N/A N/A
Butterfly icon.png Butterfly 25 4975 Gold 199 Gold
Claymore icon.png Claymore 20 1350 Gold 67.5 Gold
Crystalys icon.png Crystalys 32 1950 Gold 60.94 Gold
Daedalus icon.png Daedalus 88 5150 Gold 58.52 Gold
Demon Edge icon.png Demon Edge 40 2200 Gold 55 Gold
Desolator icon.png Desolator 55 3500 Gold 63.64 Gold
Divine Rapier icon.png Divine Rapier 350 5950 Gold 17 Gold
Echo Sabre icon.png Echo Sabre 15 2500 Gold 166.67 Gold
Faerie Fire icon.png Faerie Fire 2 70 Gold 35 Gold
Falcon Blade icon.png Falcon Blade 12 1125 Gold 93.75 Gold
Gleipnir icon.png Gleipnir 30 6150 Gold 205 Gold
Maelstrom icon.png Maelstrom 24 2700 Gold 112.5 Gold
Mage Slayer icon.png Mage Slayer 20 2400 Gold 120 Gold
Mask of Madness icon.png Mask of Madness 10 1775 Gold 177.5 Gold
Mind Breaker icon.png Mind Breaker 25 N/A N/A
Mithril Hammer icon.png Mithril Hammer 24 1600 Gold 66.67 Gold
Mjollnir icon.png Mjollnir 24 5600 Gold 233.33 Gold
Monkey King Bar icon.png Monkey King Bar 40 4975 Gold 124.38 Gold
Nullifier icon.png Nullifier 80 4725 Gold 59.06 Gold
Oblivion Staff icon.png Oblivion Staff 15 1500 Gold 100 Gold
Orchid Malevolence icon.png Orchid Malevolence 30 3475 Gold 115.83 Gold
Paladin Sword icon.png Paladin Sword 20 N/A N/A
Penta-Edged Sword icon.png Penta-Edged Sword 45 N/A N/A
Quarterstaff icon.png Quarterstaff 10 875 Gold 87.5 Gold
Radiance (Active) icon.png Radiance 60 5150 Gold 85.83 Gold
Ring of Aquila (Active) icon.png Ring of Aquila 7 N/A N/A
Sacred Relic icon.png Sacred Relic 60 3750 Gold 62.5 Gold
Satanic icon.png Satanic 45 5050 Gold 112.22 Gold
Shadow Blade icon.png Shadow Blade 20 3000 Gold 150 Gold
Silver Edge icon.png Silver Edge 52 5450 Gold 104.81 Gold
Skull Basher icon.png Skull Basher 25 2875 Gold 115 Gold
Stygian Desolator icon.png Stygian Desolator 60 N/A N/A
Values may include portions from actives or auras.

Reducing Sources[]

Abilities Applying Bonus Attack Damage Reductions

Critical Strike Multiplier[]

Wraith King minimap icon.png Wraith King performing a critical strike.
The red number displays the resulting physical damage before reductions.

Main Article: Critical Strike

An attack that triggers Critical Strike has its total damage value multiplied by the given multiplier of the source of the Critical Strike. This means a critical strike is basically an attack damage amplifier, as it does not add extra damage on top of the attack damage, but directly increases the damage of the attack by multiplying it.

The multiplier is applied before any reductions or amplifications on the target or on the attacking unit. It only counts the unit's main attack damage, plus any bonus attack damage (percentage and flat bonuses) it has, meaning any damage instances (i.e. conditional attack damage bonuses) added to the attack damage which is separate from the attack damage itself is not considered by critical strikes.

Therefore, in short, if an ability adds its damage directly to the attack damage, then it may be considered by Critical Strike, though there are exceptions to this. See total attack damage for the complete calculation.

Critical Strike Multiplier is defined as:

With C being the Critical Strike value.

All chance-based sources of Critical Strike use pseudo-random distribution. If an attack procs more than one source of critical strike, only the highest multiplier is applied.

Damage Block[]

Main Article: Damage Block

Axe minimap icon.png Axe blocking damage with Vanguard icon.png Vanguard.
The ocre number displays the total amount of damage blocked.

Damage block reduces any physical damage a unit takes from attacks or from cleave, with the exception of damage dealt by attacks from ward-type units. Damage block does not trigger against physical spell damage, with the exception of the abilities listed here. Unlike armor, damage block reduces a fixed amount of damage, instead of a percentage.

When damage block triggers, it blocks damage before other damage reducing effects do. This means that the higher the unit's armor is, the less effective damage block gets. See total attack damage for the complete calculation.

All chance-based sources of damage block use pseudo-random distribution. If an attack activates more than one damage block ability, only the highest block value is applied.

All Melee Melee heroes have an innate Damage Block ability, which has a 50% chance to block 16 damage.

Damage Multiplier[]

Main Article: Armor

All units, including buildings, have an inherent base armor value and defense class. Any physical damage dealt to a unit is multiplied by the damage multiplier, resulting in either damage reduction or increase depending on the target's armor value.

The damage multiplier limits are 0 and 2, for infinitely positive and negative armor, respectively.

Damage Manipulation[]

Main Article: Damage Manipulation

Damage manipulation is a mechanic that alters damage values, either increasing or reducing it. Damage can be manipulated on both ends, from the dealing unit (outgoing damage) and the receiving unit (incoming damage). Armor and magic resistance are the most common damage manipulators, affecting incoming physical and magical damage respectively. Besides armor and magic resistance, a general damage manipulator exists, which is used by almost all other sources of damage manipulation. This manipulator is more flexible, and can amplify or reduce any kind of damage and may affect attack damage, spell damage, or both at the same time.

Attack Classes[]

There are several different classes of attack damage (also known as Attack types or attack damage types), which determine how much damage a unit's attack deals against certain attack classes. Each of the 3 different attack classes deals either reduced, increased, or unchanged damage against each of the defense classes, on top of it being also manipulated by the armor value of the target.

Attack damage dealt against defense class is defined as

With A being the Attack Damage, RTMu being the Defense Class Damage Multiplier and DMu being the Damage Multiplier.

This table shows how much damage each attack class deals against each defense class, and which units use which attack class:

Attack Class Used by Defense Class
Hero Basic Structure
Hero Heroes, Ancient Black Dragon, Ancient Granite Golem, Ancient Thunderhide, Boar, Centaur Conqueror, Dark Troll Summoner, Death Ward, Earth, Familiar, Fire, Forged Spirit, Hellbear Smasher, Hellbear, Necronomicon Archer, Necronomicon Warrior, Roshan, Satyr Tormenter, Skeleton Archer, Spiderling, Spirit Bear, Storm, Tempest Double, Void, Warlock Golem, Wildwing Ripper, Wraith King Skeleton 100% 100% 50%
Basic Alpha Wolf, Ancient Rock Golem, Ancient Rumblehide, Centaur Courser, Eidolon, Fell Spirit, Greater Treant, Kobold Foreman, Kobold Soldier, Kobold, Lycan Lane Wolf, Lycan Wolf, Mega Melee Creep, Melee Creep, Mud Golem, Ogre Bruiser, Ogre Frostmage, Satyr Mindstealer, Shard Golem, Skeleton Warrior, Spiderite, Super Melee Creep, Treant, Wildwing 75% 100% 70%
Pierce Ancient Black Drake, Ghost, Giant Wolf, Harpy Scout, Harpy Stormcrafter, Hill Troll Berserker, Hill Troll Priest, Hill Troll, Mega Ranged Creep, Plague Ward, Ranged Creep, Satyr Banisher, Serpent Ward, Super Ranged Creep, Undying Zombie, Vhoul Assassin 50% 150% 35%
Siege Fountain, Siege Creep, Super Siege Creep, Tower (Tier 1), Tower (Tier 2), Tower (Tier 3), Tower (Tier 4) 100% 100% 250%

Examples[]

Sven minimap icon.png Sven with 100 damage attacks a siege creep which has 0 armor and deals 50 damage to it. If the siege creep gained 5 armor, how much the 100 damage attack would deal?
Unknown Unit icon.png Siege Creep's Base Armor for this example is 5.
Unknown Unit icon.png Siege Creep's Damage Multiplier is 0.76923.
According to the table values, the attack class multiplier is 0.5 because the attack class "hero" (from Sven minimap icon.png Sven) deals 50% less damage against the defense class "structure" (to the Siege Creep).
Therefore in this example, Sven minimap icon.png Sven's 100 damage attack to the siege creep with 5 armor would be 38.4615. The same attack would deal 76.923 damage to a unit with any other defense class, since attack class hero deals full damage to them.

Instant Attacks[]

Instant Attacks are abilities that uses the hero's regular attack damage values as ability damage to the target unit(s) or area. Instant Attacks do not use the hero's attack animation, are independent from attack speed, and ignores the regular downtime between attacks. Certain abilities that deal instant attack damage are not affected by evasion. If an instant attack is performed by a Ranged Ranged hero, it still uses their regular attack projectile for the attack, unless it is set not to.

If an instant attack occurs while already attacking an enemy normally, it does not interfere with the regular attacks. Instant Attacks do not interfere with any other actions of the hero either, meaning they neither interrupt movement, nor cancel ability casts nor stop channeling abilities.

Since instant attacks do not use attack animations and jump straight to the attack point, they cannot proc effects which react on the start of an attack (e.g. Untouchable or Moment of Courage). However, they can proc effects which react on attack hit (e.g. Counter Helix or Retaliate), although there are some exceptions to this.

Instant attacks may proc on-hit effects only when they are allowed to. An instant attack which is not allowed to proc attack modifiers is not allowed to proc on-hit effects either. Just like regular attacks, instant attacks also cause the attacking hero to get revealed if attacking from the Fog of War.

1 Requires Talent talent.
2a Requires Aghanim's Scepter icon.png Aghanim's Scepter.
2b Requires Aghanim's Shard icon.png Aghanim's Shard.
3 Grants instant attacks to tier 2, 3, and 4 towers.
4 These instant attacks may not proc any attack modifiers or on-hit effects.
5 May not proc any attack modifiers or on-hit effects, unless the required Talent talent is chosen.

Conditional Attack Damage Bonus[]

These abilities give direct attack damage bonuses under certain circumstances, the bonuses are not displayed in the HUD and its damage type is not limited to physical damage; nonetheless, they are considered as attack damage since it is dealt in one instance together with a unit's attack damage.

They are affected by defense class (even when dealing magical damage), but not considered by lifesteal, crit, cleave or spell damage amplification. It is also not affected by percentage-based attack damage bonuses or reductions, but can be reduced with flat reductions (i.e. Damage Block).

Increasing Sources[]

Conditional Attack Damage Bonus Increasing Sources
  • Mana Break icon.png
    Mana Burned per Hit: 28/40/52/64
    Max Mana Burned per hit: 1%/1.8%/2.6%/3.4% (Talent 1.6%/2.4%/3.2%/4%)
    Burned Mana As Damage: 50%
    Illusion Percentage: 50%
    Does not stack with Diffusal Blade 1 icon.png Diffusal Blade. Illusions burn a reduced amount of mana per hit.
  • Diffusal Blade 1 icon.png
    Mana Burned per Hit (Hero): 40
    Mana Burned per Hit (Illusion): Melee 12 / Ranged 8
    Burned Mana as Damage: 100%
  • Talent Left 3.png
    Mana Burned per Hit: 20
    Illusion Mana Burned per Hit: 10
    Burned Mana as Damage: 80%
  • Talent Right 2.png
    Mana Burned per Hit: 20
    Illusion Mana Burned per Hit: 10
    Burned Mana as Damage: 80%
  • Mana Break (Necronomicon Warrior) icon.png
    Mana Burned per Hit: 50
    Burned Mana as Damage: 50%
  • Abyssal Blade icon.png
    Proc Chance: Melee 25% / Ranged 10%
    Damage: 120
    Applies bonus physical damage to the proccing attack.
  • Battle Fury icon.png
    Attack Damage Bonus: Melee 15 / Ranged 6
    Applies bonus attack damage only against non-hero units.
  • Silken Bola icon.png
    Attack Damage Bonus Against Target: 6/7/8/9
    Duration: 6
    Applies bonus magical damage. Triggers on allied hero attacks (including illusions and clones, excluding creep-heroes), and on any attacks done by units owned by Broodmother minimap icon.png Broodmother.
  • Marksmanship icon.png
    Proc Chance: 20%/30%/40% (Talent 32%/42%/52%)
    Proc Damage: 40/60/80
    Applies bonus physical damage to the proccing attack.
  • Demolish (Earth) icon.png
    Building Attack Damage Bonus: 90/180/270
  • Sleight of Fist icon.png
    Hero Attack Damage Bonus: 40/80/120/160 (Talent 105/145/185/225)
  • Enchanted Quiver icon.png
    Damage: 200
    Cooldown: 4
    Applies bonus magical damage whenever off cooldown, only to Ranged ranged attacks.
  • Acorn Shot icon.png
    Instant Attack Damage Bonus: 50/75/100/125
    Damage is granted as the projectile hits the target and immediately removed afterward, so that only the ability can use it.
  • Javelin icon.png
    Proc Chance: 30%
    Damage: 70
    Applies magical damage to the proccing attack.
  • Tidebringer icon.png
    Attack Damage Bonus: 30/60/90/120
    Cooldown: 13/10/7/4
    Damage applies whenever it is off cooldown and on autocast, or upon manually using.
  • The Leveller icon.png
    Building Attack Damage Bonus: 25%
  • Feast icon.png
    Enemy Max Health as Damage: 0.6%/0.8%/1%/1.2%
  • Open Wounds icon.png
    Enemy Max Health as Damage: 2%
  • Bulwark icon.png
    Aghanim's Scepter Upgrade
    Instant Attack Damage Bonus: 75
    Damage is granted as the soldiers hits the target and immediately removed afterward.
  • Mystic Snake icon.png
    Aghanim's Scepter Upgrade
    Applies physical damage amplification upon attacking units which are petrified.
  • Cold Blooded icon.png
    Aghanim's Scepter Upgrade
    Applies physical damage amplification upon attacking units which are petrified.
  • Stone Gaze icon.png
    Physical Attack Damage Amplification: 40%/45%/50%
    Applies physical damage amplification upon attacking units which are petrified.
  • Monkey King Bar icon.png
    Proc Chance: 80%
    Damage: 70
    Applies magical damage to the proccing attack.
  • Quelling Blade icon.png
    Attack Damage Bonus: Melee 12 / Ranged 6
    Applies bonus attack damage only against non-hero units.
  • Cloak and Dagger icon.png
    Backstab Damage per Agility: 1.4/1.8/2.2 (Talent 1.9/2.3/2.7)
    Applies bonus physical damage based on Riki minimap icon.png Riki's Agility attribute symbol.png agility when attacking enemies from behind.
  • Bash (Roshan) icon.png
    Proc Chance: 15%
    Damage: 50
    Applies physical on the proccing attack.
  • Shadow Blade icon.png
    Damage: 175
    Applies bonus damage on the first attack out of the invisibility.
  • Silver Edge icon.png
    Damage: 175
    Applies bonus damage on the first attack out of the invisibility.
  • Skull Basher icon.png
    Proc Chance: Melee 25% / Ranged 10%
    Damage: 100
    Applies physical damage on the proccing attack.
  • Bash of the Deep icon.png
    Required Hits: 4
    Damage: 50/100/150/200 (Talent 110/160/210/260)
    Creep Damage Percentage: 200%
    Applies physical damage applies on the proccing attack.
  • Headshot icon.png
    Proc Chance: 40%
    Damage: 20/50/80/110
    Applies physical damage on the proccing attack.
  • Demolish (Spirit Bear) icon.png
    Building Attack Damage Bonus: 33%
  • Wind Walk (Storm) icon.png
    Damage: 140/200/260
    Applies bonus damage on the first attack out of the invisibility.
  • Anchor Smash icon.png
    Talent Upgrade
    Instant Attack Damage Bonus: 40/85/130/175 (Upgradable by Aghanim's Shard. 130/175/220/265)
    Proc Chance: Talent 50%
    Bonus damage is granted for the instant attack and immediately removed afterward.
    Requires a Talent for it to proc.
  • Tree Grab icon.png
    Non-Building Attack Damage Bonus: 20% (Talent 40%)
    Building Attack Damage Bonus: 70%/100%/130%/160%
    Number of Attacks: 5 (Upgradable by Aghanim's Shard. Infinite)
    Applies damage bonus when attacking enemy units.
  • Fury Swipes icon.png
    Attack Damage Bonus per Stack: 10/19/28/37 (Talent 22/31/40/49)
    Damage applies to each attack and grows stronger with consecutive attacks on the same target.
  • Witchbane icon.png
    Max Mana as Attack Damage Bonus: 4%
    Applies bonus magical damage.

Reducing Sources[]

Conditional Attack Damage Bonus Reducing Sources


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