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.

$\sum {Atk}$

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 Average Damage Minimum Damage Maximum Damage Average Damage Minimum Damage Maximum Damage Average Damage Abaddon 28 38 33 51 61 56 138 148 143 10 Alchemist 24 33 28 49 58 53 127 136 131 9 Ancient Apparition 21 31 26 44 54 49 143 153 147 10 Anti-Mage 29 33 31 53 57 55 134 138 136 4 Arc Warden 31 41 36 47 57 52 120 130 124 10 Axe 27 31 29 52 56 54 151 155 152 4 Bane 35 41 38 57 63 60 132 138 135 6 Batrider 19 23 21 41 45 43 125 129 127 4 Beastmaster 35 39 37 58 62 60 142 146 144 4 Bloodseeker 35 41 38 57 63 60 156 162 158 6 Bounty Hunter 30 38 34 51 59 55 126 134 130 8 Brewmaster 29 36 32 52 59 55 159 166 162 7 Bristleback 30 36 33 52 58 55 136 142 139 6 Broodmother 29 35 32 48 54 51 135 141 138 6 Centaur Warrunner 36 38 37 63 65 64 196 198 197 2 Chaos Knight 29 59 44 51 81 66 150 180 164 30 Chen 25 35 30 44 54 49 137 147 141 10 Clinkz 15 21 18 37 43 40 115 121 118 6 Clockwerk 24 26 25 50 52 51 152 154 152 2 Crystal Maiden 28 34 31 44 50 47 140 146 142 6 Dark Seer 33 39 36 54 60 57 144 150 146 6 Dark Willow 27 35 31 48 56 52 150 158 153 8 Dawnbreaker 31 35 33 57 61 59 161 165 163 4 Dazzle 22 28 25 47 53 50 154 160 157 6 Death Prophet 23 33 28 47 57 52 149 159 153 10 Disruptor 29 33 31 49 53 51 133 137 135 4 Doom 34 44 39 58 68 63 165 175 170 10 Dragon Knight 31 37 34 52 58 55 151 157 153 6 Drow Ranger 29 36 32 49 56 52 133 140 136 7 Earth Spirit 25 35 30 47 57 52 175 185 179 10 Earthshaker 27 37 32 49 59 54 156 166 161 10 Elder Titan 23 33 28 49 59 54 136 146 141 10 Ember Spirit 33 37 35 55 59 57 130 134 132 4 Enchantress 23 33 28 45 55 50 155 165 160 10 Enigma 24 30 27 43 49 46 147 153 150 6 Faceless Void 37 43 40 56 62 59 143 149 146 6 Grimstroke 21 25 23 46 50 48 156 160 158 4 Gyrocopter 16 22 19 42 48 45 146 152 149 6 Hoodwink 22 29 25 46 53 49 150 157 153 7 Huskar 21 26 23 42 47 44 141 146 143 5 Invoker 29 35 32 44 50 47 177 183 180 6 Io 28 34 31 45 51 48 132 138 135 6 Jakiro 27 35 31 53 61 57 134 142 138 8 Juggernaut 16 20 18 50 54 52 131 135 133 4 Keeper of the Light 18 25 21 41 48 44 134 141 137 7 Kunkka 26 36 31 50 60 55 160 170 165 10 Legion Commander 35 39 37 60 64 62 156 160 157 4 Leshrac 22 26 24 44 48 46 146 150 147 4 Lich 24 33 28 48 57 52 167 176 171 9 Lifestealer 22 28 25 47 53 50 117 123 119 6 Lina 19 27 23 49 57 53 156 164 160 8 Lion 29 35 32 47 53 50 149 155 151 6 Lone Druid 18 22 20 38 42 40 119 123 121 4 Luna 26 32 29 50 56 53 149 155 151 6 Lycan 24 29 26 50 55 52 149 154 151 5 Magnus 32 40 36 57 65 61 159 167 162 8 Mars 29 37 33 52 60 56 151 159 154 8 Medusa 26 32 29 48 54 51 152 158 155 6 Meepo 22 28 25 39 45 42 91 97 94 6 Mirana 27 32 29 45 50 47 152 157 154 5 Monkey King 29 33 31 51 55 53 158 162 160 4 Morphling 9 18 13 33 42 37 152 161 156 9 Naga Siren 23 25 24 44 46 45 146 148 146 2 Nature's Prophet 27 37 32 50 60 55 157 167 162 10 Necrophos 26 30 28 47 51 49 125 129 127 4 Night Stalker 38 42 40 61 65 63 148 152 150 4 Nyx Assassin 27 31 29 46 50 48 119 123 120 4 Ogre Magi 34 40 37 49 55 52 122 128 124 6 Omniknight 31 41 36 55 65 60 154 164 158 10 Oracle 13 19 16 39 45 42 149 155 152 6 Outworld Destroyer 19 31 25 49 61 55 171 183 176 12 Pangolier 33 39 36 51 57 54 144 150 146 6 Phantom Assassin 32 34 33 55 57 56 154 156 154 2 Phantom Lancer 26 36 31 52 62 57 145 155 149 10 Phoenix 26 36 31 49 59 54 151 161 155 10 Puck 23 31 27 46 54 50 148 156 151 8 Pudge 42 48 45 67 73 70 154 160 157 6 Pugna 21 28 24 45 52 48 196 203 199 7 Queen of Pain 21 27 24 46 52 49 145 151 147 6 Razor 23 25 24 45 47 46 120 122 121 2 Riki 41 45 43 59 63 61 100 104 101 4 Rubick 24 30 27 49 55 52 139 145 141 6 Sand King 23 33 28 45 55 50 132 142 137 10 Shadow Demon 29 33 31 51 55 53 155 159 157 4 Shadow Fiend 19 25 22 39 45 42 141 147 143 6 Shadow Shaman 46 53 49 71 78 74 173 180 176 7 Silencer 18 32 25 43 57 50 127 141 134 14 Skywrath Mage 16 26 21 41 51 46 160 170 164 10 Slardar 30 38 34 51 59 55 155 163 159 8 Slark 32 40 36 53 61 57 102 110 106 8 Snapfire 26 32 29 46 52 49 142 148 144 6 Sniper 13 19 16 40 46 43 133 139 135 6 Spectre 23 27 25 46 50 48 107 111 108 4 Spirit Breaker 31 41 36 60 70 65 150 160 154 10 Storm Spirit 26 36 31 49 59 54 162 172 167 10 Sven 41 43 42 63 65 64 156 158 156 2 Techies 9 11 10 34 36 35 130 132 130 2 Templar Assassin 30 36 33 53 59 56 146 152 148 6 Terrorblade 30 36 33 52 58 55 191 197 194 6 Tidehunter 25 31 28 52 58 55 154 160 156 6 Timbersaw 26 30 28 50 54 52 143 147 144 4 Tinker 24 30 27 54 60 57 150 156 152 6 Tiny 31 37 34 59 65 62 169 175 172 6 Treant Protector 62 70 66 87 95 91 186 194 189 8 Troll Warlord 27 35 31 48 56 52 144 152 147 8 Tusk 27 31 29 50 54 52 163 167 165 4 Underlord 37 43 40 62 68 65 149 155 152 6 Undying 35 43 39 57 65 61 138 146 142 8 Ursa 24 28 26 42 46 44 117 121 119 4 Vengeful Spirit 24 30 27 44 50 47 154 160 157 6 Venomancer 18 21 19 44 47 45 137 140 138 3 Viper 27 29 28 48 50 49 121 123 121 2 Visage 23 33 28 45 55 50 129 139 134 10 Void Spirit 30 34 32 54 58 56 144 148 145 4 Warlock 24 34 29 49 59 54 139 149 143 10 Weaver 36 46 41 53 63 58 143 153 147 10 Windranger 24 36 30 42 54 48 146 158 152 12 Winter Wyvern 14 21 17 40 47 43 144 151 147 7 Witch Doctor 29 39 34 51 61 56 147 157 151 10 Wraith King 38 40 39 60 62 61 147 149 148 2 Zeus 33 41 37 55 63 59 151 159 154 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, 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.

Main Article: Armor

Defense class multiplier

Depending on the combination of the attack class and defense class, an defense class 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 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 defense classes. Each of the 4 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.

Example
A hero with 100 attack damage attacking a siege unit which has 0 armor deals 50 damage to it, because the attack class "hero" deals 50% less damage against the defense class "structure", which is the siege creeps' and all buildings' defense class. 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 defense class, since attack class hero deals full damage to them.

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%

Instant Attacks

Instant Attacks are abilities that make use of the hero's regular attacks and dealing instant 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 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
• Dawnbreaker – Starbreaker
• Ember Spirit – Sleight of Fist
• Faceless Void – Time Lock
• Buildings – Glyph of Fortification³
• Gyrocopter – Flak Cannon⁴
• Gyrocopter – Side Gunner²
• Hoodwink – Acorn Shot
• Io – Tether¹
• Juggernaut – Omnislash⁶
• Juggernaut – Swiftslash⁶
• Legion Commander – Moment of Courage
• Lifestealer – Infest²
• 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.

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
Damage	+12 +15 +15 +20 +20 +25 +30 +50 +60 +70	+15 +15 +15 +15 +15 +15 +15 +16 +20 +20 +20 +25 +25 +30 +30 +30 +30 +50 +60	+20 +40	+100 +20 +25 +40 +65 +80	+30 +35 +70	+35 +50	+200	+252

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 Damage	+20 +50	+20		+100

Attack damage increasing items

Strength

Attack damage increase for strength heroes

Item	Value	Item cost	Cost per value point
Abyssal Blade	35	6325	180.71
Aghanim's Scepter	10	4200	420
Armlet of Mordiggian	75	2475	33
Belt of Strength	6	450	75
Black King Bar	34	4050	119.12
Book of Shadows	12	N/A	N/A
Book of the Dead	30	N/A	N/A
Bracer	8	505	63.13
Circlet	2	155	77.5
Crown	4	450	112.5
Dagon 1	6	2700	450
Dagon 2	8	3950	493.75
Dagon 3	10	5200	520
Dagon 4	12	6450	537.5
Dagon 5	14	7700	550
Dragon Lance	12	1900	158.33
Drum of Endurance	6	1700	283.33
Echo Sabre	30	2500	83.33
Ethereal Blade	10	4300	430
Eye of Skadi	25	5300	212
Fallen Sky	20	N/A	N/A
Gauntlets of Strength	3	140	46.67
Ghost Scepter	5	1500	300
Giant's Ring	40	N/A	N/A
Gleipnir	42	6150	146.43
Heart of Tarrasque	45	5100	113.33
Heaven's Halberd	20	3550	177.5
Helm of the Dominator	6	2350	391.67
Helm of the Overlord	20	6000	300
Holy Locket	3	2400	800
Hurricane Pike	15	4550	303.33
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	16	N/A	N/A
Null Talisman	2	505	252.5
Ocean Heart	5	N/A	N/A
Ogre Axe	10	1000	100
Overwhelming Blink	25	6800	272
Power Treads (Strength)	10	1400	140
Reaver	25	2800	112
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	80	5050	63.13
Scythe of Vyse	10	5675	567.5
Skull Basher	35	2950	84.29
Solar Crest	5	2625	525
Soul Ring	6	680	113.33
Spell Prism	6	N/A	N/A
Spirit Vessel	2	2840	1420
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	505	252.5
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
Book of Shadows	12	N/A	N/A
Bracer	5	505	101
Butterfly	55	4975	90.45
Circlet	2	155	77.5
Crown	4	450	112.5
Dagon 1	6	2700	450
Dagon 2	8	3950	493.75
Dagon 3	10	5200	520
Dagon 4	12	6450	537.5
Dagon 5	14	7700	550
Diffusal Blade	24	3150	131.25
Dragon Lance	16	1900	118.75
Eaglesong	25	2800	112
Ethereal Blade	40	4300	107.5
Eye of Skadi	25	5300	212
Ghost Scepter	5	1500	300
Gleipnir	42	6150	146.43
Helm of the Dominator	6	2350	391.67
Helm of the Overlord	20	6000	300
Holy Locket	3	2400	800
Hurricane Pike	20	4550	227.5
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
Mage Slayer	40	3250	81.25
Magic Wand	3	450	150
Manta Style	26	4600	176.92
Meteor Hammer	8	2350	293.75
Mirror Shield	16	N/A	N/A
Ninja Gear	24	N/A	N/A
Null Talisman	2	505	252.5
Ocean Heart	5	N/A	N/A
Power Treads (Agility)	10	1400	140
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	5675	567.5
Slippers of Agility	3	140	46.67
Solar Crest	5	2625	525
Spell Prism	6	N/A	N/A
Spirit Vessel	2	2840	1420
Swift Blink	25	6800	272
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	505	101
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 Blink	25	6800	272
Arcane Ring	10	N/A	N/A
Bloodstone	16	5750	359.38
Bloodthorn	55	6275	114.09
Book of Shadows	12	N/A	N/A
Book of the Dead	30	N/A	N/A
Bracer	5	505	101
Circlet	2	155	77.5
Crown	4	450	112.5
Dagon 1	14	2700	192.86
Dagon 2	16	3950	246.88
Dagon 3	18	5200	288.89
Dagon 4	20	6450	322.5
Dagon 5	22	7700	350
Diffusal Blade	12	3150	262.5
Drum of Endurance	6	1700	283.33
Echo Sabre	25	2500	100
Essence Ring	6	N/A	N/A
Ethereal Blade	10	4300	430
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	2200	220
Ghost Scepter	5	1500	300
Gleipnir	50	6150	123
Helm of the Dominator	6	2350	391.67
Helm of the Overlord	20	6000	300
Holy Locket	3	2400	800
Hurricane Pike	15	4550	303.33
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	140	46.67
Meteor Hammer	8	2350	293.75
Mirror Shield	16	N/A	N/A
Mystic Staff	25	2800	112
Null Talisman	5	505	101
Oblivion Staff	25	1500	60
Ocean Heart	5	N/A	N/A
Orchid Malevolence	50	3475	69.5
Power Treads (Intelligence)	10	1400	140
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	5675	162.14
Shiva's Guard	30	4850	161.67
Silver Edge	55	5600	101.82
Solar Crest	5	2625	525
Spell Prism	6	N/A	N/A
Spirit Vessel	2	2840	1420
Staff of Wizardry	10	1000	100
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
Wind Waker	35	7125	203.57
Witch Blade	12	2600	216.67
Wraith Band	2	505	252.5
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	6325	253
Armlet of Mordiggian	50	2475	49.5
Battle Fury	55	4130	75.09
Black King Bar	24	4050	168.75
Blade Mail	28	2125	75.89
Blades of Attack	9	450	50
Bloodthorn	30	6275	209.17
Bracer	3	505	168.33
Broadsword	15	1000	66.67
Broom Handle	14	N/A	N/A
Butterfly	25	4975	199
Claymore	20	1350	67.5
Crystalys	32	1950	60.94
Daedalus	88	5150	58.52
Demon Edge	40	2200	55
Desolator	55	3500	63.64
Divine Rapier	350	6000	17.14
Echo Sabre	15	2500	166.67
Faerie Fire	2	70	35
Falcon Blade	10	1100	110
Gleipnir	30	6150	205
Imp Claw	26	N/A	N/A
Maelstrom	24	2700	112.5
Mage Slayer	20	3250	162.5
Mask of Madness	10	1775	177.5
Mind Breaker	25	N/A	N/A
Mithril Hammer	24	1600	66.67
Mjollnir	24	5600	233.33
Monkey King Bar	40	4975	124.38
Nullifier	80	4725	59.06
Oblivion Staff	15	1500	100
Orchid Malevolence	30	3475	115.83
Paladin Sword	20	N/A	N/A
Penta-Edged Sword	45	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	55	5050	91.82
Shadow Blade	25	3000	120
Silver Edge	40	5600	140
Skull Basher	25	2950	118
Stygian Desolator	60	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.

• Alpha Wolf - Packleader's Aura
  
  Attack Damage Bonus: 30%
  Radius: 1200
  
• Double Damage Rune - Double Damage
  
  Attack Damage Bonus: 100%
  Duration: 45
  
• Earthshaker - Enchant Totem
  
  Attack Damage Bonus: 100%/200%/300%/400%
  Duration: 14
  Grants bonus attack damage for Earthshaker's next attack.
• Lycan - Feral Impulse
  
  Attack Damage Bonus: 12%/24%/36%/48% ( 42%/54%/66%/78%)
  Radius: Global
  Affects units under Lycan's control only.
• Magnus - Empower
  
  Attack Damage Bonus: 12%/20%/28%/36% ( 22%/30%/38%/46%)
  Duration: 40
  Grants bonus damage to the targeted unit. Has a 75% stronger effect when cast on self.
• Sven - God's Strength
  
  Self Attack Damage Bonus: 120%/160%/200% ( 170%/210%/250%)
  Duration: 40
  
• Vladmir's Offering - Vladmir's Aura
  
  Attack Damage Bonus: 18%
  Radius: 1200
  

Flat bonus

• Armlet of Mordiggian - Unholy Strength
  
  Attack Damage Bonus: 35
  The attack damage bonus is granted instantly once toggled on.
• Bristleback - Warpath
  
  Max Stacks: 5/7/9
  Attack Damage Bonus per Stack: 25/30/35 ( 49/54/59)
  Stack Duration: 14
  Each stack has its own duration, successive spell casts do not refresh the duration of previous stacks.
• Broodmother - Insatiable Hunger
  
  Attack Damage Bonus: 35/40/45/50 ( 85/90/95/100)
  Duration: 8/10/12/14
  
• Chen - Holy Persuasion
  
  Attack Damage Bonus: 8/16/24/32 ( 24/32/40/48)
  Grants bonus damage to the dominated unit.
• Elder Titan - Astral Spirit
  
  Attack Damage Bonus per Creep: 3/7/11/15
  Attack Damage Bonus per Hero: 20/40/60/80 ( 45/65/85/105)
  Buff Duration: 10
  Elder Titan gains bonus attack damage after the Astral Spirit returns to him based on the amount of units it has hit.
• Enchantress - Enchant
  
  Attack Damage Bonus: 10/30/50/70
  Duration: 30/60/90/120
  Grants bonus damage to the dominated unit.
• Helm of the Dominator - Dominate
  
  Attack Damage Bonus: 25
  Damage is directly added to the unit's main attack damage.
• Helm of the Overlord - Dominate
  
  Attack Damage Bonus: 25
  Damage is directly added to the unit's main attack damage.
• Invoker - Alacrity
  
  Attack Damage Bonus (Exort): 10/22/34/46/58/70/82 ( /94) ( 45/57/69/81/93/105/117 ( /129))
  Duration: 9
  
• Invoker - Exort
  
  Attack Damage Bonus per Exort Instance: 2/4/6/8/10/12/14
  Maximum of 3 Exort instances.
• Legion Commander - Duel
  
  Attack Damage Bonus: 10/20/30 ( 40/50/60)
  The winner of the duel gains a permanent attack damage bonus.
• Monkey King - Jingu Mastery
  
  Charges: 4
  Attack Damage Bonus: 40/70/100/130 ( 170/200/230/260)
  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: 7/12/17/22 ( 12/17/22/27)
  Link Duration: 5/6/7/8
  Buff Duration: 15/16/17/18
  Steals damage from enemies for the link duration and gives it to Razor as bonus damage.
  Attack damage bonus lasts for the buff duration starting at the time of cast, not when the link ends.
• Shadow Fiend - Necromastery
  
  Max Souls: 11/14/17/20 ( 25)
  Attack Damage Bonus per Soul: 1/2/3/4 ( 4/5/6/7)
  Shadow Fiend gains 1 soul for every unit he kills and loses 40% of souls on death.
• Templar Assassin - Refraction
  
  Number of Instances: 3/4/5/6 ( 11/12/13/14)
  Attack Damage Bonus: 25/50/75/100
  Duration: 17
  
• Terrorblade - Metamorphosis
  
  Attack Damage Bonus: 15/30/45/60
  Duration: 40/44/48/52
  Damage is directly added to the unit's main attack damage.
• Tiny - Grow
  
  Attack Damage Bonus: 30/70/110
  Damage is directly added to the unit's main attack damage.
• Underlord - Atrophy Aura
  
  Radius: 900
  Hero Death Attack Damage Bonus: 30/35/40/45
  Creep Death Attack Damage Bonus: 2/4/6/8
  Duration: 30/45/60/75
  Ally Hero Attack Damage Bonus: 40%
  Damage bonuses are independent from each other and fully stack. Grants a partial bonus to allies within the radius with the talent.

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 defense class (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. Physical damage.
• Anti-Mage - Mana Break
  
  Mana Burned per Hit: 28/40/52/64
  Max Mana Burned per Hit: 50%
  Burned Mana as Damage: 1%/1.8%/2.6%/3.4%
  Damage applies based on amount of mana burned.
• Battle Fury - Quell
  
  Melee Attack Damage Bonus: 18
  Ranged Attack Damage Bonus: 6
  Damage only applies against non-hero units.
• Diffusal Blade - Manabreak
  
  Mana Burned per Hit: 40
  Mana Burned per Hit (Melee Illusion): 12
  Mana Burned per Hit (Ranged Illusion): 8
  Burned Mana as Damage: 100%
  Damage applies based on amount of mana burned.
• Drow Ranger - Marksmanship
  
  Proc Chance: 20%/30%/40% ( 32%/42%/52%)
  Proc Damage: 50/70/90
  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 ( 105/145/185/225)
  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.
• Javelin - Pierce
  
  Proc Chance: 30%
  Damage: 70
  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: 40%/45%/50%
  Damage applies upon attacking units which are petrified.
• Mirana - Mana Break
  
  Mana Burned per Hit: 20
  Mana Burned per Hit (Illusion): 10
  Burned Mana as Damage: 80%
  Damage applies based on amount of mana burned.
• Monkey King Bar - Pierce
  
  Proc Chance: 80%
  Damage: 70
  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: 12
  Ranged Attack Damage Bonus: 6
  Damage only applies against non-hero units.
• Riki - Cloak and Dagger
  
  Agility as Backstab Damage: 1.4/1.8/2.2 ( 1.9/2.3/2.7)
  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. Physical damage.
• Slardar - Bash of the Deep
  
  Required Hits: 4
  Damage: 50/100/150/200 ( 110/160/210/260)
  Creep Damage Percentage.: 200%
  Damage applies to the proccing attack. Deals extra damage to creeps. Physical damage.
• Sniper - Headshot
  
  Proc Chance: 40%
  Damage: 20/50/80/110
  Damage applies to the proccing attack. Physical damage.
• Spirit Bear - Demolish
  
  Building Attack Damage Bonus: 33%
  Damage applies when attacking buildings.
• Storm - Wind Walk
  
  Damage: 140/200/260
  Damage applies to the first attack out of the invisibility. Physical damage.
• Tiny - Tree Grab
  
  Non-Building Attack Damage Bonus: 25% ( 40%)
  Building Attack Damage Bonus: 90%/120%/150%/180%
  Number of Attacks: 5 ( Infinite)
  Damage bonus is applied when attacking enemy units.
• Ursa - Fury Swipes
  
  Attack Damage Bonus per Stack: 9/18/27/36 ( 21/30/39/48)
  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 based on amount of mana burned.

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% ( 55%)
  Reduction Duration: 11
  Reduces the damage of enemies affected by the spell.
• Lycan - Howl
  
  Main Attack Damage Reduction: 25%/30%/35%/40%
  Reduction Duration: 5/6/7/8
  Reduces the damage of enemies affected by the spell.
• Medusa - Split Shot
  
  Overall Attack Damage Reduced To: 50%/60%/70%/80%
  Reduces Medusa's attack damage when toggled on.
• Phantom Assassin - Stifling Dagger
  
  Overall Attack Damage Reduced To: 25%/40%/55%/70%
  The reduction is applied as the projectile hits the target and immediately removed afterwards, so that only the dagger is affected by it.
• Rubick - Fade Bolt
  
  Main Attack Damage Reduction: 10%/18%/26%/34%
  Reduction Duration: 10
  Reduces the damage of enemies affected by the spell.
• Tidehunter - Anchor Smash
  
  Main Attack Damage Reduction: 30%/40%/50%/60% ( 50%/60%/70%/80%)
  Reduction Duration: 6
  Reduces the damage of enemies affected by the spell.
• Underlord - Atrophy Aura
  
  Main Attack Damage Reduction: 5%/15%/25%/35%
  Radius: 900
  Reduces the damage of enemies inside the aura.
• Windranger - Focus Fire
  
  Overall Attack Damage Reduction: 50%/40%/30% ( 34%/24%/14%)
  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: 7/12/17/22 ( 12/17/22/27)
  Link Duration: 5/6/7/8
  Buff Duration: 15/16/17/18
  Steals damage from enemies for the link duration or until the link is broken.
  Attack reduction lasts for the debuff duration starting at the time of cast.

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: 40%
  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.

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 Cooldown 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 Phased 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