Attack damage

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 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 with 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.

Formula:

Damage =

{ [Main Attack Damage × (1 + Σ Percentage Bonuses) + Flat Bonuses]

× Crit Multiplier - Blocked Damage }

× Armor Multipliers

× General Damage Multipliers

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 these two extremes is chosen to help decide the damage output. The most extreme hero example of this is Chaos Knight, with base attack damage ranging between 29 and 59, causing his damage output to be somewhat unpredictable (or at least much less predictable than other heroes). This range of 30 is always part of his attack calculations, no matter how many attributes or how much bonus attack damage he acquires.

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 talents that raise attributes.

Formula:

main attack damage = base attack damage + total primary attribute points + ability bonuses.

Hero attack damage

Hero Base Attack Damage Starting Main Attack Damage Max Main Attack Damage Damage Range Minimum Damage Maximum Damage Minimum Damage Maximum Damage Minimum Damage Maximum Damage Abaddon 28 38 51 61 123 133 10 Alchemist 24 33 49 58 114 123 9 Ancient Apparition 21 31 44 54 126 136 10 Anti-Mage 29 33 53 57 120 124 4 Arc Warden 31 41 47 57 107 117 10 Axe 27 31 52 56 134 138 4 Bane 35 41 57 63 119 125 6 Batrider 16 20 38 42 108 112 4 Beastmaster 37 41 60 64 130 134 4 Bloodseeker 33 39 55 61 137 143 6 Bounty Hunter 30 38 51 59 113 121 8 Brewmaster 29 36 52 59 141 148 7 Bristleback 25 35 47 57 117 127 10 Broodmother 29 35 44 50 121 127 6 Centaur Warrunner 36 38 63 65 173 175 2 Chaos Knight 29 59 51 81 133 163 30 Chen 25 35 44 54 121 131 10 Clinkz 15 21 37 43 102 108 6 Clockwerk 24 26 50 52 134 136 2 Crystal Maiden 28 34 44 50 123 129 6 Dark Seer 33 39 54 60 128 134 6 Dark Willow 27 35 45 53 129 137 8 Dazzle 22 28 47 53 136 142 6 Death Prophet 27 39 51 63 135 147 12 Disruptor 29 33 49 53 119 123 4 Doom 30 46 54 70 143 159 16 Dragon Knight 31 37 50 56 132 138 6 Drow Ranger 31 38 51 58 121 128 7 Earth Spirit 25 35 47 57 153 163 10 Earthshaker 27 37 49 59 138 148 10 Elder Titan 23 33 49 59 121 131 10 Ember Spirit 33 37 55 59 117 121 4 Enchantress 23 33 45 55 136 146 10 Enigma 24 30 43 49 129 135 6 Faceless Void 33 39 56 62 128 134 6 Grimstroke 21 25 46 50 137 141 4 Gyrocopter 21 31 40 50 126 136 10 Huskar 21 26 42 47 119 124 5 Invoker 29 35 44 50 154 160 6 Io 22 31 39 48 111 120 9 Jakiro 27 35 53 61 130 138 8 Juggernaut 16 20 50 54 117 121 4 Keeper of the Light 18 25 41 48 118 125 7 Kunkka 26 36 50 60 141 151 10 Legion Commander 35 39 60 64 139 143 4 Leshrac 22 26 44 48 128 132 4 Lich 24 33 48 57 146 155 9 Lifestealer 21 27 46 52 104 110 6 Lina 19 31 49 61 138 150 12 Lion 29 35 47 53 131 137 6 Lone Druid 18 22 38 42 105 109 4 Luna 32 38 50 56 132 138 6 Lycan 24 29 50 55 132 137 5 Magnus 32 40 57 65 141 149 8 Mars 29 37 52 60 134 142 8 Medusa 24 30 46 52 132 138 6 Meepo 22 28 39 45 82 88 6 Mirana 27 32 45 50 134 139 5 Monkey King 29 35 51 57 140 146 6 Morphling 9 18 33 42 136 145 9 Naga Siren 23 25 44 46 128 130 2 Nature's Prophet 27 37 50 60 139 149 10 Necrophos 26 30 47 51 112 116 4 Night Stalker 38 42 61 65 133 137 4 Nyx Assassin 27 31 46 50 106 110 4 Ogre Magi 39 45 54 60 114 120 6 Omniknight 31 41 53 63 135 145 10 Oracle 13 19 39 45 135 141 6 Outworld Devourer 16 31 46 61 147 162 15 Pangolier 33 39 51 57 128 134 6 Phantom Assassin 30 32 53 55 135 137 2 Phantom Lancer 26 40 52 66 129 143 14 Phoenix 28 38 51 61 140 150 10 Puck 23 34 46 57 130 141 11 Pudge 40 46 65 71 142 148 6 Pugna 19 27 43 51 168 176 8 Queen of Pain 20 28 45 53 127 135 8 Razor 23 25 45 47 107 109 2 Riki 41 45 59 63 93 97 4 Rubick 24 30 49 55 123 129 6 Sand King 23 33 45 55 117 127 10 Shadow Demon 29 33 50 54 129 133 4 Shadow Fiend 19 25 39 45 123 129 6 Shadow Shaman 46 53 71 78 155 162 7 Silencer 18 32 43 57 113 127 14 Skywrath Mage 14 24 39 49 137 147 10 Slardar 30 38 51 59 137 145 8 Slark 32 40 53 61 94 102 8 Snapfire 26 32 46 52 125 131 6 Sniper 19 25 40 46 122 128 6 Spectre 23 27 46 50 96 100 4 Spirit Breaker 31 41 60 70 134 144 10 Storm Spirit 26 36 49 59 143 153 10 Sven 41 43 63 65 140 142 2 Techies 9 11 34 36 113 115 2 Templar Assassin 30 36 53 59 130 136 6 Terrorblade 26 32 48 54 163 169 6 Tidehunter 25 31 52 58 136 142 6 Timbersaw 26 30 50 54 127 131 4 Tinker 24 30 54 60 133 139 6 Tiny 31 37 59 65 150 156 6 Treant Protector 62 70 87 95 169 177 8 Troll Warlord 27 35 48 56 127 135 8 Tusk 27 31 50 54 144 148 4 Underlord 37 43 62 68 134 140 6 Undying 35 43 57 65 124 132 8 Ursa 24 28 42 46 100 104 4 Vengeful Spirit 21 29 41 49 132 140 8 Venomancer 16 18 42 44 119 121 2 Viper 27 29 48 50 108 110 2 Visage 23 33 45 55 115 125 10 Void Spirit 32 36 56 60 130 134 4 Warlock 24 34 49 59 123 133 10 Weaver 36 46 50 60 124 134 10 Windranger 24 36 42 54 128 140 12 Winter Wyvern 12 19 38 45 124 131 7 Witch Doctor 29 39 51 61 130 140 10 Wraith King 40 42 62 64 134 136 2 Zeus 33 41 55 63 134 142 8

Bonus attack damage

Bonus attack damage comprises the green number next to main attack damage. It comes in two types:

• Flat Bonus: adds a flat number of damage to the unit's damage total. Examples: Phase Boots, Necromastery, Insatiable Hunger
• Percentage Bonus: adds an amount of bonus attack damage equal to a percentage of the affected unit's main attack damage, or total attack damage, depending on the ability. Examples: Vladmir's Offering, Lunar Blessing, Packleader's Aura
• While bonus attack damage is usually positive, it can also use a negative value, serving to reduce a unit's net attack damage. Examples: Static Link, Anchor Smash, Fade Bolt

Formula

bonus attack damage = sum of bonuses + sum of reductions.

Critical strike multiplier

Critical Strike is an attack modifier that multiplies the total attack damage certain factor. If an attack activates more than one critical strike, only the highest multiplier is applied.

Main Article: Critical Strike

Blocked damage

Damage Block is a passive ability that gives the unit a chance to block a certain number of physical damage from an attack. If an attack activates more than one damage block ability, only the highest block value is applied.

Main Article: Damage Block

Armor value multiplier

The target's armor influences the attack damage by a factor that asymptotically lies between 0 and 2 and is 1 for a target that has no armor.

Formula

damage multiplier = 1 - ((0.06 × armor) ÷ (1 + 0.06 × |armor|)).

Main Article: Armor

Armor type multiplier

Depending on the combination of the attack damage type and armor types, an armor type multiplier modulates the attack damage.

General damage multipliers

Main Article: Damage manipulation

A few abilities such as Bristleback and Dispersion modify all incoming damage, including attack damage. Bulwark reduces attack damage specifically.

Attack damage types

There are several different types of attack damage, which determine how much damage a unit's attack deals against certain armor types. Each of the 4 different attack types deals either reduced, increased, or unchanged damage against each of the armor types, on top of it being also manipulated by the armor value of the target.

Example
A hero with 100 attack damage attacking a siege unit which has 0 armor deals 50 damage to it, because the attack type "hero" deals 50% less damage against the armor type "structure", which is the siege creeps' and all buildings' armor type. If the siege creep would gain 5 armor, the 100 damage attack would deal (100 * 0.8 * 0.5) = 40 damage. The same attack would deal 80 damage to a unit with any other armor type, since attack type hero deals full damage to them.

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

Attack Damage Type	Used by	Armor Type
		Hero	Basic	Structure
Hero	Heroes, Ancient Black Dragon, Ancient Granite Golem, Ancient Prowler Shaman, 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, Warlock Golem, Wildwing Ripper, Wraith King Skeleton	100%	100%	50%
Basic	Alpha Wolf, Ancient Prowler Acolyte, Ancient Rock Golem, Ancient Rumblehide, Centaur Courser, Eidolon, Fell Spirit, Greater Treant, Kobold Foreman, Kobold Soldier, Kobold, 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, Tier 1 Tower, Tier 2 Tower, Tier 3 Tower, Tier 4 Tower	100%	100%	250%

Instant attacks

Several abilities make use of the hero's regular attacks. However, these attacks are instant. This means they do not use the hero's attack animation, are independent from attack speed and ignore the regular downtime between attacks. If an instant attack is performed by a 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 attack. They do not interfere with any other actions of the hero either, meaning they do not interrupt movement, do not cancel spell casts and do not stop channeling spells of the hero.

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, like Untouchable or Moment of Courage. However, they can proc effects which react on attack hit, such as Counter Helix and 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.

The following abilities make use of instant attacks:

• Clinkz – Searing Arrows¹
• Drow Ranger – Marksmanship²
• Ember Spirit – Sleight of Fist
• Faceless Void – Time Lock
• Buildings – Glyph of Fortification³
• Gyrocopter – Flak Cannon⁴
• Gyrocopter – Side Gunner²
• Io – Tether¹
• Juggernaut – Omnislash⁶
• Juggernaut – Swiftslash⁶
• Legion Commander – Moment of Courage
• Mars – God's Rebuke
• Medusa – Split Shot⁵
• Monkey King – Boundless Strike
• Morphling – Waveform¹
• Pangolier – Swashbuckle
• Phantom Assassin – Stifling Dagger
• Puck – Dream Coil¹
• Riki – Tricks of the Trade
• Shadow Shaman – Serpent Ward split shot^{2 4}
• Tiny – Tree Throw
• Tiny – Tree Volley
• Tidehunter – Anchor Smash
• Void Spirit – Astral Step
• Weaver – Geminate Attack

¹ Requires talent.

² Requires Aghanim's Scepter.

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 Split Shot may not proc any attack modifiers or on-hit effects, unless the required talent is chosen.

⁶ Number of instant attacks is dependent on Juggernaut's attack speed.

Attack damage granting talents

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

Bonus	Level 10		Level 15		Level 20		Level 25
	Left	Right	Left	Right	Left	Right	Left	Right
Bonus attack damage	+12 +15 +15 +15 +15 +15 +20 +25 +25 +35 +50 +50 +70	+12 +12 +12 +15 +15 +15 +16 +20 +20 +20 +25 +25 +25 +30 +30 +30 +50 +60 +60	+20 +40 +70	+100 +20 +25 +25 +40 +40 +80	+30 +35 +70 +80	+50	+200	+251

The following heroes have a 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 attack damage	+50	+20

Attack damage increasing items

Strength

Attack damage increase for strength heroes

Item	Value	Item cost	Cost per value point
Abyssal Blade	35	6625	189.29
Aghanim's Scepter	10	4200	420
Armlet of Mordiggian	71	2475	34.86
Belt of Strength	6	450	75
Black King Bar	34	4050	119.12
Book of the Dead	30	N/A	N/A
Bracer	8	510	63.75
Circlet	2	155	77.5
Clumsy Net	5	N/A	N/A
Crown	4	450	112.5
Dagon 1	6	N/A	N/A
Dagon 2	8	2650	331.25
Dagon 3	10	3950	395
Dagon 4	12	5250	437.5
Dagon 5	14	6550	467.86
Dragon Lance	12	1900	158.33
Drum of Endurance	6	1475	245.83
Echo Sabre	27	2500	92.59
Ethereal Blade	10	4500	450
Eye of Skadi	25	5300	212
Fallen Sky	20	N/A	N/A
Gauntlets of Strength	3	145	48.33
Ghost Scepter	5	1500	300
Havoc Hammer	48	N/A	N/A
Heart of Tarrasque	40	5400	135
Heaven's Halberd	20	3450	172.5
Helm of the Dominator	6	2350	391.67
Holy Locket	3	2500	833.33
Hurricane Pike	15	4525	301.67
Illusionist's Cape	14	N/A	N/A
Iron Branch	1	50	50
Ironwood Tree	6	N/A	N/A
Kaya and Sange	16	4100	256.25
Linken's Sphere	14	4600	328.57
Magic Wand	3	450	150
Manta Style	10	4600	460
Meteor Hammer	8	2350	293.75
Minotaur Horn	20	N/A	N/A
Mirror Shield	20	N/A	N/A
Necronomicon 1	6	N/A	N/A
Necronomicon 2	12	2050	170.83
Necronomicon 3	18	3300	183.33
Null Talisman	2	510	255
Ocean Heart	5	N/A	N/A
Ogre Axe	10	1000	100
Power Treads (Strength)	10	N/A	N/A
Reaver	25	3000	120
Ring of Aquila	10	N/A	N/A
Rod of Atos	10	2750	275
Sange	16	2050	128.13
Sange and Yasha	16	4100	256.25
Satanic	50	5800	116
Scythe of Vyse	10	5575	557.5
Silver Edge	52	6100	117.31
Skull Basher	35	2950	84.29
Solar Crest	10	3725	372.5
Soul Ring	6	815	135.83
Spell Prism	12	N/A	N/A
Spirit Vessel	2	2940	1470
Trident	30	6150	205
Ultimate Orb	10	2050	205
Urn of Shadows	2	840	420
Vambrace (Agility)	5	N/A	N/A
Vambrace (Intelligence)	5	N/A	N/A
Vambrace (Strength)	10	N/A	N/A
Veil of Discord	4	1525	381.25
Wraith Band	2	510	255
Values may include portions from actives or auras.

Agility

Attack damage increase for agility heroes

Item	Value	Item cost	Cost per value point
Aghanim's Scepter	10	4200	420
Band of Elvenskin	6	450	75
Blade of Alacrity	10	1000	100
Bracer	5	510	102
Butterfly	55	5275	95.91
Circlet	2	155	77.5
Clumsy Net	5	N/A	N/A
Crown	4	450	112.5
Dagon 1	6	N/A	N/A
Dagon 2	8	2650	331.25
Dagon 3	10	3950	395
Dagon 4	12	5250	437.5
Dagon 5	14	6550	467.86
Diffusal Blade	20	3150	157.5
Dragon Lance	14	1900	135.71
Drum of Endurance	6	1475	245.83
Eaglesong	25	3000	120
Ethereal Blade	40	4500	112.5
Eye of Skadi	25	5300	212
Ghost Scepter	5	1500	300
Helm of the Dominator	6	2350	391.67
Holy Locket	3	2500	833.33
Hurricane Pike	20	4525	226.25
Illusionist's Cape	14	N/A	N/A
Iron Branch	1	50	50
Ironwood Tree	6	N/A	N/A
Linken's Sphere	14	4600	328.57
Magic Wand	3	450	150
Manta Style	26	4600	176.92
Meteor Hammer	8	2350	293.75
Mirror Shield	20	N/A	N/A
Ninja Gear	20	N/A	N/A
Null Talisman	2	510	255
Ocean Heart	5	N/A	N/A
Poor Man's Shield	8	N/A	N/A
Power Treads (Agility)	10	N/A	N/A
Ring of Aquila	16	N/A	N/A
Rod of Atos	10	2750	275
Sange and Yasha	16	4100	256.25
Scythe of Vyse	10	5575	557.5
Slippers of Agility	3	145	48.33
Solar Crest	10	3725	372.5
Spell Prism	12	N/A	N/A
Spirit Vessel	2	2940	1470
Trident	30	6150	205
Ultimate Orb	10	2050	205
Urn of Shadows	2	840	420
Vambrace (Agility)	10	N/A	N/A
Vambrace (Intelligence)	5	N/A	N/A
Vambrace (Strength)	5	N/A	N/A
Veil of Discord	4	1525	381.25
Wraith Band	5	510	102
Yasha	16	2050	128.13
Yasha and Kaya	16	4100	256.25
Values may include portions from actives or auras.

Intelligence

Attack damage increase for intelligence heroes

Item	Value	Item cost	Cost per value point
Aghanim's Scepter	10	4200	420
Arcane Ring	10	N/A	N/A
Bloodstone	16	5250	328.13
Bloodthorn	55	6475	117.73
Book of the Dead	30	N/A	N/A
Bracer	5	510	102
Circlet	2	155	77.5
Clumsy Net	5	N/A	N/A
Crown	4	450	112.5
Dagon 1	6	N/A	N/A
Dagon 2	8	2650	331.25
Dagon 3	10	3950	395
Dagon 4	12	5250	437.5
Dagon 5	14	6550	467.86
Diffusal Blade	10	3150	315
Drum of Endurance	6	1475	245.83
Echo Sabre	25	2500	100
Essence Ring	6	N/A	N/A
Ethereal Blade	10	4500	450
Eul's Scepter of Divinity	10	2725	272.5
Eye of Skadi	25	5300	212
Fallen Sky	20	N/A	N/A
Force Staff	10	2175	217.5
Ghost Scepter	5	1500	300
Helm of the Dominator	6	2350	391.67
Holy Locket	3	2500	833.33
Hurricane Pike	13	4525	348.08
Iron Branch	1	50	50
Ironwood Tree	6	N/A	N/A
Kaya	16	2050	128.13
Kaya and Sange	16	4100	256.25
Linken's Sphere	14	4600	328.57
Magic Wand	3	450	150
Manta Style	10	4600	460
Mantle of Intelligence	3	145	48.33
Meteor Hammer	8	2350	293.75
Mirror Shield	20	N/A	N/A
Mystic Staff	25	2700	108
Null Talisman	5	510	102
Oblivion Staff	25	1500	60
Ocean Heart	5	N/A	N/A
Orchid Malevolence	50	3475	69.5
Power Treads (Intelligence)	10	N/A	N/A
Ring of Aquila	10	N/A	N/A
Robe of the Magi	6	450	75
Rod of Atos	20	2750	137.5
Scythe of Vyse	35	5575	159.29
Shiva's Guard	30	4850	161.67
Silver Edge	50	6100	122
Solar Crest	10	3725	372.5
Spell Prism	12	N/A	N/A
Spirit Vessel	2	2940	1470
Staff of Wizardry	10	1000	100
Trident	30	6150	205
Ultimate Orb	10	2050	205
Urn of Shadows	2	840	420
Vambrace (Agility)	5	N/A	N/A
Vambrace (Intelligence)	10	N/A	N/A
Vambrace (Strength)	5	N/A	N/A
Veil of Discord	4	1525	381.25
Wraith Band	2	510	255
Yasha and Kaya	16	4100	256.25
Values may include portions from actives or auras.

Bonus attack damage

Attack damage increase independent from primary attribute

Item	Value	Item cost	Cost per value point
Abyssal Blade	25	6625	265
Armlet of Mordiggian	46	2475	53.8
Battle Fury	55	4180	76
Black King Bar	24	4050	168.75
Blade Mail	28	2050	73.21
Blades of Attack	9	450	50
Bloodthorn	30	6475	215.83
Bracer	3	510	170
Broadsword	15	1000	66.67
Broom Handle	12	N/A	N/A
Butterfly	25	5275	211
Claymore	21	1400	66.67
Crystalys	32	1950	60.94
Daedalus	88	5150	58.52
Demon Edge	42	2200	52.38
Desolator	60	3500	58.33
Divine Rapier	330	6000	18.18
Echo Sabre	15	2500	166.67
Faerie Fire	2	70	35
Greater Faerie Fire	40	N/A	N/A
Havoc Hammer	30	N/A	N/A
Imp Claw	24	N/A	N/A
Maelstrom	24	2700	112.5
Mask of Madness	15	1775	118.33
Mind Breaker	25	N/A	N/A
Mithril Hammer	24	1600	66.67
Mjollnir	24	5600	233.33
Monkey King Bar	42	4850	115.48
Nullifier	80	4725	59.06
Oblivion Staff	15	1500	100
Orchid Malevolence	30	3475	115.83
Paladin Sword	20	N/A	N/A
Quarterstaff	10	875	87.5
Radiance	60	5150	85.83
Ring of Aquila	7	N/A	N/A
Sacred Relic	60	3800	63.33
Satanic	25	5800	232
Shadow Blade	25	3000	120
Silver Edge	40	6100	152.5
Skull Basher	25	2950	118
Stygian Desolator	75	N/A	N/A
Values may include portions from actives or auras.

Attack damage increasing abilities

Percentage Bonus

• Gives a unit a damage buff equal to a percentage of their main attack damage.

• Earthshaker - Enchant Totem
  
  Attack Damage Bonus: 100%/200%/300%/400%
  Duration: 14
  Number of Attacks: 1
  
• Lycan - Feral Impulse
  
  Attack Damage Bonus: 14%/26%/38%/50% ( 29%/41%/53%/65%)
  Radius: 1200
  Affects units under Lycan's control only.
• Vladmir's Offering - Vladmir's Aura
  
  Attack Damage Bonus: 18%
  Radius: 1200
  
• Magnus - Empower
  
  Attack Damage Bonus: 11%/18%/25%/32% ( 23%/30%/37%/44%)
  Duration: 40
  
• Sven - God's Strength
  
  Self Attack Damage Bonus: 80%/120%/160%
  Duration: 25
  
• Tiny - Tree Grab
  
  Attack Damage Bonus: 10%/20%/30%/40%
  Number of Attacks: 5
  
• Alpha Wolf - Packleader's Aura
  
  Attack Damage Bonus: 20%
  Radius: 1200
  
• Double Damage Rune - Double Damage
  
  Attack Damage Bonus: 100%
  Duration: 45
  
• Illusions - Illusion
  
  Based on the ability the illusion is created by, it may deal more attack damage than the hero it is based on.

Flat bonus

• Armlet of Mordiggian - Unholy Strength
  
  Attack Damage Bonus: 31
  
• Bristleback - Warpath
  
  Max Stacks: 5/7/9
  Attack Damage Bonus per Stack: 18/24/30 ( 48/54/60)
  Stack Duration: 14
  
• Broodmother - Insatiable Hunger
  
  Attack Damage Bonus: 60/100/140 ( 120/160/200)
  Duration: 14
  
• Elder Titan - Astral Spirit
  
  Attack Damage Bonus per Creep: 6/9/12/15
  Attack Damage Bonus per Hero: 15/30/60/80 ( 45/60/90/110)
  Duration: 10
  Elder Titan gains bonus attack damage after the Astral Spirit returns to him based on the amount of units it has hit.
• Invoker - Alacrity
  
  Attack Damage Bonus (Exort): 10/25/40/55/70/85/100 ( /115)
  Duration: 9
  
• Invoker - Exort
  
  Attack Damage Bonus per Exort Instance: 3/7/11/15/19/23/27
  Maximum of 3 Exort instances.
• Legion Commander - Duel
  
  Attack Damage Bonus: 10/18/26 ( 50/58/66)
  The winner of the duel gains a permanent attack damage bonus.
• Monkey King - Jingu Mastery
  
  Charges: 4
  Attack Damage Bonus: 60/90/120/150 ( 135/165/195/225)
  Grants Monkey King bonus attack damage for 4 attacks after having attacked the same enemy hero 4 times.
• Phantom Assassin - Stifling Dagger
  
  Attack Damage Bonus: 65
  Damage is granted as the projectile hits the target and immediately removed afterwards, so that only the dagger can use it.
• Razor - Static Link
  
  Attack Damage Stolen per Second: 7/14/21/28 ( 14/21/28/35)
  Link Duration: 8
  Buff Duration: 18
  
• Shadow Fiend - Necromastery
  
  Max Souls: 12/20/28/36 ( 22/30/38/46)
  Attack Damage Bonus per Soul: 2 ( 4)
  
• Templar Assassin - Refraction
  
  Number of Instances: 3/4/5/6 ( 7/8/9/10)
  Attack Damage Bonus: 20/40/60/80
  Duration: 17
  
• Terrorblade - Metamorphosis
  
  Attack Damage Bonus: 20/40/60/80
  Duration: 40/44/48/52
  Damage is directly added to the unit's main attack damage.
• Tiny - Grow
  
  Attack Damage Bonus: 30/45/60
  Damage is directly added to the unit's main attack damage.
• Underlord - Atrophy Aura
  
  Permanent Hero Death Attack Damage Bonus: 2/3/4/5 ( 9/10/11/12)
  Hero Death Attack Damage Bonus: 30/35/40/45
  Creep Death Attack Damage Bonus: 5
  Duration: 30/40/50/60 ( 70/80/90/100)
  Damage bonuses are independent from each other and fully stack.

Conditional bonus

These abilities give direct attack damage bonuses under certain circumstances. Due to this, they do not display their damage bonus in the HUD. Their damage type can also vary and is not necessarily physical; nonetheless, they still count as attack damage since their damage is dealt in one instance together with a unit's attack damage. This means they are affected by armor type (even when dealing magical damage), but not by spell damage amplification.

• Abyssal Blade - Bash
  
  Proc Chance (Melee): 25%
  Proc Chance (Ranged): 10%
  Damage: 100
  Damage applies to the proccing attack. Magical damage.
• Anti-Mage - Mana Break
  
  Mana Burned per Hit: 28/40/52/64
  Max Mana Burned per Hit: 50%
  Burned Mana as Damage: 1%/2%/3%/4%
  Damage applies upon attacking units which have mana.
• Battle Fury - Quell
  
  Melee Attack Damage Bonus: 18
  Ranged Attack Damage Bonus: 5
  Damage only applies against non-hero units.
• Diffusal Blade - Manabreak
  
  Mana Burned per Hit: 50
  Mana Burned per Hit (Melee Illusion): 16
  Mana Burned per Hit (Ranged Illusion): 8
  Burned Mana as Damage: 80%
  Damage applies upon attacking units which have mana.
• Drow Ranger - Marksmanship
  
  Proc Chance: 20%/30%/40%
  Proc Damage: 120/130/140
  Damage applies to the proccing attack. Physical damage.
• Earth - Demolish
  
  Building Attack Damage Bonus: 90/180/270
  Damage applies when attacking buildings.
• Ember Spirit - Sleight of Fist
  
  Attack Damage Bonus against heroes: 40/80/120/160
  Only deals bonus damage to heroes.
• Enchanted Quiver - Certain Strike
  
  Damage: 300
  Cooldown: 5
  Damage applies whenever it is off cooldown, and only to ranged attacks. Magical damage.
• Iron Talon - [[Iron Talon#|]]
  
  Melee Attack Damage Bonus: 24
  Ranged Attack Damage Bonus: 7
  Damage only applies against non-hero units.
• Javelin - Pierce
  
  Proc Chance: 25%
  Damage: 100
  Damage applies to the proccing attack. Magical damage.
• Kunkka - Tidebringer
  
  Attack Damage Bonus: 25/50/75/100
  Cooldown: 13/10/7/4
  Damage applies whenever it is off cooldown and on autocast, or upon manually using.
• The Leveller - Demolish
  
  Building Attack Damage Bonus: 25%
  Damage applies when attacking buildings.
• Medusa - Stone Gaze
  
  Attack Damage Amplification: 50%
  Damage applies upon attacking units which are petrified.
• Mirana - Mana Break
  
  Mana Burned per Hit: 25
  Mana Burned per Hit (Illusion): 10
  Burned Mana as Damage: 80%
  Damage applies upon attacking units which have mana.
• Monkey King Bar - Pierce
  
  Proc Chance: 75%
  Damage: 100
  Damage applies to the proccing attack. Magical damage.
• Necronomicon Warrior - Mana Break
  
  Mana Burned per Hit: 30/40/50
  Burned Mana as Damage: 50%
  Damage applies upon attacking units which have mana.
• Quelling Blade - Quell
  
  Melee Attack Damage Bonus: 15
  Ranged Attack Damage Bonus: 6
  Damage only applies against non-hero units.
• Riki - Cloak and Dagger
  
  Agility as Backstab Damage: 140%/180%/220% ( 190%/230%/270%)
  Damage applies when attacking enemies from behind. Damage is based on Riki's agility.
• Roshan - Bash
  
  Proc Chance: 15%
  Damage: 50
  Damage applies to the proccing attack. Physical damage.
• Shadow Blade - Shadow Walk
  
  Damage: 175
  Damage applies to the first attack out of the invisibility.
• Silver Edge - Shadow Walk
  
  Damage: 175
  Damage applies to the first attack out of the invisibility.
• Skull Basher - Bash
  
  Proc Chance (Melee): 25%
  Proc Chance (Ranged): 10%
  Damage: 100
  Damage applies to the proccing attack. Magical damage.
• Slardar - Bash of the Deep
  
  Required Hits: 4
  Damage: 75/125/175/225
  Damage applies to the proccing attack.
• Sniper - Headshot
  
  Proc Chance: 40%
  Damage: 30/60/90/120
  Damage applies to the proccing attack.
• Spirit Bear - Demolish
  
  Building Attack Damage Bonus: 40%
  Damage applies when attacking buildings.
• Storm - Wind Walk
  
  Damage: 100/160/220
  Damage applies to the first attack out of the invisibility.
• Tiny - Tree Grab
  
  Building Attack Damage Bonus: 80%/120%/160%/200%
  Damage applies when attacking buildings.
• Ursa - Fury Swipes
  
  Attack Damage Bonus per Stack: 7/14/21/28 ( 23/30/37/44)
  Damage applies to each attack and grows stronger with consecutive attacks on the same target.
• Weaver - Mana Break
  
  Mana Burned per Hit: 20
  Mana Burned per Hit (Illusion): 10
  Burned Mana as Damage: 80%
  Damage applies upon attacking units which have mana.

Attack damage reducing abilities

Percentage reduction

• Main attack damage reduction applies to main attack (white damage) only.
• Overall attack damage reduction applies to both main attack damage (white) and bonus damage (green).
• All effects shown here reduce the affected unit's damage before any damage block is applied.

• Dragon Knight - Breathe Fire
  
  Overall Attack Damage Reduction: 25% ( 50%)
  
• Illusions - Illusion
  
  Overall Attack Damage Reduction: ??%
  Illusionist's Cape is the only working source of bonus damage for illusions. Note that while most illusions deal reduced attack damage, some do not.
• Lycan - Howl
  
  Main Attack Damage Reduction: 25%/30%/35%/40%
  
• Phantom Assassin - Stifling Dagger
  
  Overall Attack Damage Reduction: 75%/60%/45%/30%
  The reduction is applied as the projectile hits the target and immediately removed afterwards, so that only the dagger is affected by it.
• Tidehunter - Anchor Smash
  
  Main Attack Damage Reduction: 30%/40%/50%/60%
  
• Underlord - Atrophy Aura
  
  Main Attack Damage Reduction: 7%/18%/29%/40%
  
• Windranger - Focus Fire
  
  Overall Attack Damage Reduction: 50%/40%/30%
  Reduces own attack damage when attacking the Focus Fire target.

Flat reduction

Flat damage reduction is applied before crits as negative bonus attack damage.

• Razor - Static Link
  
  Attack Damage Stolen per Second: 7/14/21/28 ( 21/28/35/42)
  Link Duration: 8
  
• Rubick - Fade Bolt
  
  Hero Attack Damage Reduction: 20/25/30/35 ( 65/70/75/80)
  Creep Attack Damage Reduction: 10/13/15/17
  

Conditional reduction

These abilities reduce attack damage under certain circumstances. Due to this, they do not display their reductions in the HUD.

• Drow Ranger - Marksmanship
  
  Splinter Attack Damage Reduction: 50%
  Reduces Drow Ranger's attack damage when the secondary projectiles hit.
• Ember Spirit - Sleight of Fist
  
  Attack Damage Reduction Against Creeps: 50%
  Only reduces damage against creeps.
• Juggernaut - Blade Fury
  
  Attack Damage Reduction: 100%
  When attacking non-building units during Blade Fury, the attack damage gets reduced to 0.
• Medusa - Split Shot
  
  Attack Damage Reduction: 70%/55%/40%/25%
  Reduces Medusa's attack damage when the secondary projectiles hit.

See also

• Table of hero attributes

Mechanics Stats Armor Attributes (Strength / Agility / Intelligence) Collision size Health (Health regeneration) Magic resistance Mana (Mana regeneration) Movement speed Status resistance Turn rate Vision Attack Attack animation Attack damage Attack modifier (Bash / Cleave & Splash / Critical strike / Lifesteal / Mana break) Attack range Attack speed Cast animation Cast range Damage types Motion buffer range Projectile speed Spell damage Spell lifesteal Abilities Abilities Aura Channeling Damage block Damage manipulation Damage over time Evasion Talents Teleport Status effects Attack immunity Break Cyclone Disable Disarm Ethereal Fear Forced movement Hex Hide Hypnosis Invisibility Invulnerability Leash Root Silence Sleep Slow Spell immunity Stun Taunt World Experience Gold Glyph of Fortification Map (Minimap) River Scan Runes Time of day Trees Gameplay Creep control techniques Denying Disjoint Dispel Ganking Harassment Hero complexity Initiating Item passive stacking Item sharing Jungling Lane Pushing Random distribution Roles Trap Units Ancient creeps Buildings Couriers Creep-heroes Heroes Illusions Lane creeps Neutral creeps Roshan Summons & Wards