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Armor
 
 
 

Ice Armor (Ogre Frostmage) icon.png

▶️ Armored to the teeth!
Clockwerk

Armor is a stat that reduces (or increases, if negative) physical damage a unit takes from abilities and attacks. Every unit is capable of gaining or losing armor, and most units start with a small amount of base armor, some even starting with negative armor. A hero's armor can be passively increased with Agility attribute symbol.png agility via leveling up, certain items, Talent talents and some abilities. Armor of any unit can also be temporarily increased or reduced with some abilities.

Each point of Agility attribute symbol.png agility increases a hero's armor by 0.167 or .

Total armor is defined as

Σ Armor = Main Armor + Bonus Armor

Base Armor[]

Base armor is the part of the main armor that never changes throughout a game. It consists of one fixed value set for each unit individually. The base armor of a unit can be a negative number. Since only heroes have agility, the HUD of all non-hero units shows their base armor.

Heroes[]

Heroes Armor
Puck -3
Lone Druid, Mirana, Morphling, Skywrath Mage, Viper -2
Abaddon, Alchemist, Ancient Apparition, Arc Warden, Axe, Brewmaster, Chen, Crystal Maiden, Dark Willow, Ember Spirit, Huskar, Lich, Lion, Mars, Medusa, Phantom Lancer, Phoenix, Pudge, Razor, Silencer, Sniper, Treant Protector, Troll Warlord, Visage, Void Spirit, Windranger, Wraith King -1
Anti-Mage, Beastmaster, Broodmother, Clinkz, Dazzle, Disruptor, Dragon Knight, Drow Ranger, Earth Spirit, Elder Titan, Grimstroke, Hoodwink, Invoker, Juggernaut, Keeper of the Light, Legion Commander, Leshrac, Lina, Lycan, Marci, Nature's Prophet, Pugna, Queen of Pain, Rubick, Sand King, Shadow Demon, Slark, Sven, Tidehunter, Timbersaw, Tiny, Vengeful Spirit, Venomancer, Weaver, Winter Wyvern, Witch Doctor 0
Bane, Bristleback, Centaur Warrunner, Clockwerk, Death Prophet, Enchantress, Faceless Void, Io, Jakiro, Lifestealer, Magnus, Necrophos, Nyx Assassin, Oracle, Pangolier, Phantom Assassin, Shadow Fiend, Snapfire, Spectre, Storm Spirit, Templar Assassin, Tusk, Undying, Ursa, Warlock 1
Batrider, Bloodseeker, Chaos Knight, Dark Seer, Dawnbreaker, Earthshaker, Enigma, Gyrocopter, Kunkka, Luna, Monkey King, Night Stalker, Omniknight, Primal Beast, Shadow Shaman, Spirit Breaker, Tinker, Zeus 2
Outworld Destroyer 2.5
Doom, Naga Siren, Riki, Slardar, Techies, Underlord 3
Bounty Hunter, Meepo 4
Ogre Magi, Terrorblade 5

Creeps[]

Units Armor
Lycan Lane Wolf, Ranged Creep, Siege Creep, Super Siege Creep 0
Mega Ranged Creep, Super Ranged Creep 1
Melee Creep 2
Mega Melee Creep, Super Melee Creep 3

Summons[]

Summons Armor
Astral Spirit 0
Familiar 0/2/4
Fire 0/4/8
Storm 2
Void 3/4/5
Spirit Bear 3/4/5/6
Earth 3/5/7
Warlock Golem 6/9/12

Main Armor[]

Main armor is the armor value shown in white numbers near the shield icon in the HUD, consisting of base armor and the armor granted by a hero's agility. The only way to improve a hero's main armor is to increase its Agility attribute symbol.png agility, which is gained by leveling up, acquiring certain items, or with the help of certain abilities.

Attribute Bonus Main Armor
Agility attribute symbol.png Agility +0.167

The main armor is defined as

Main Armor = (Base Armor + (Σ Agility Current)/6) × (1 - Armor Negation)

Hero Armor
Hero Base Level 1 Level 15 Level 25 Level 30
Abaddon icon.png Abaddon -1 2.83 6.33 8.83 10.08
Alchemist icon.png Alchemist -1 2.67 6.17 8.67 9.92
Ancient Apparition icon.png Ancient Apparition -1 2.33 7.47 11.13 12.97
Anti-Mage icon.png Anti-Mage 0 4 10.53 15.2 17.53
Arc Warden icon.png Arc Warden -1 2.33 9.33 14.33 16.83
Axe icon.png Axe -1 2.33 7.47 11.13 12.97
Bane icon.png Bane 1 4.67 10.5 14.67 16.75
Batrider icon.png Batrider 2 4.5 8.7 11.7 13.2
Beastmaster icon.png Beastmaster 0 3 6.73 9.4 10.73
Bloodseeker icon.png Bloodseeker 2 5.67 12.9 18.07 20.65
Bounty Hunter icon.png Bounty Hunter 4 7.5 13.57 17.9 20.07
Brewmaster icon.png Brewmaster -1 2.17 6.83 10.17 11.83
Bristleback icon.png Bristleback 1 3.83 8.03 11.03 12.53
Broodmother icon.png Broodmother 0 3.17 11.1 16.77 19.6
Centaur Warrunner icon.png Centaur Warrunner 1 3.5 5.83 7.5 8.33
Chaos Knight icon.png Chaos Knight 2 5 8.27 10.6 11.77
Chen icon.png Chen -1 1.5 6.4 9.9 11.65
Clinkz icon.png Clinkz 0 3.67 9.5 13.67 15.75
Clockwerk icon.png Clockwerk 1 3.17 8.53 12.37 14.28
Crystal Maiden icon.png Crystal Maiden -1 1.67 5.4 8.07 9.4
Dark Seer icon.png Dark Seer 2 5 9.2 12.2 13.7
Dark Willow icon.png Dark Willow -1 2 5.73 8.4 9.73
Dawnbreaker icon.png Dawnbreaker 2 4.33 8.3 11.13 12.55
Dazzle icon.png Dazzle 0 3.33 7.3 10.13 11.55
Death Prophet icon.png Death Prophet 1 3.33 7.53 10.53 12.03
Disruptor icon.png Disruptor 0 2.5 5.77 8.1 9.27
Doom icon.png Doom 3 4.83 6.93 8.43 9.18
Dragon Knight icon.png Dragon Knight 0 3.17 7.83 11.17 12.83
Drow Ranger icon.png Drow Ranger 0 3.33 10.1 14.93 17.35
Earth Spirit icon.png Earth Spirit 0 2.83 8.43 12.43 14.43
Earthshaker icon.png Earthshaker 2 4 7.27 9.6 10.77
Elder Titan icon.png Elder Titan 0 2.33 6.53 9.53 11.03
Ember Spirit icon.png Ember Spirit -1 2.67 9.43 14.27 16.68
Enchantress icon.png Enchantress 1 4.17 9.07 12.57 14.32
Enigma icon.png Enigma 2 4.33 6.67 8.33 9.17
Faceless Void icon.png Faceless Void 1 4.17 11.17 16.17 18.67
Grimstroke icon.png Grimstroke 0 3 7.43 10.6 12.18
Gyrocopter icon.png Gyrocopter 2 6.33 14.03 19.53 22.28
Hoodwink icon.png Hoodwink 0 4 12.4 18.4 21.4
Huskar icon.png Huskar -1 0.67 4.17 6.67 7.92
Invoker icon.png Invoker 0 2.33 6.77 9.93 11.52
Io icon.png Io 1 3.33 7.07 9.73 11.07
Jakiro icon.png Jakiro 1 3.5 6.3 8.3 9.3
Juggernaut icon.png Juggernaut 0 5.67 12.2 16.87 19.2
Keeper of the Light icon.png Keeper of the Light 0 2.5 6.23 8.9 10.23
Kunkka icon.png Kunkka 2 4.33 8.07 10.73 12.07
Legion Commander icon.png Legion Commander 0 3 6.97 9.8 11.22
Leshrac icon.png Leshrac 0 3.83 10.37 15.03 17.37
Lich icon.png Lich -1 1.83 6.5 9.83 11.5
Lifestealer icon.png Lifestealer 1 4.17 10.23 14.57 16.73
Lina icon.png Lina 0 3.83 9.43 13.43 15.43
Lion icon.png Lion -1 2 5.5 8 9.25
Lone Druid icon.png Lone Druid -2 1.33 7.87 12.53 14.87
Luna icon.png Luna 2 6 13.93 19.6 22.43
Lycan icon.png Lycan 0 2.67 6.63 9.47 10.88
Magnus icon.png Magnus 1 3.5 9.33 13.5 15.58
Marci icon.png Marci 0 3.33 8.93 12.93 14.93
Mars icon.png Mars -1 2.33 6.3 9.13 10.55
Medusa icon.png Medusa -1 2.67 10.6 16.27 19.1
Meepo icon.png Meepo 4 6.83 11.97 15.63 17.47
Mirana icon.png Mirana -2 2 9.93 15.6 18.43
Monkey King icon.png Monkey King 2 5.67 14.3 20.47 23.55
Morphling icon.png Morphling -2 2 11.1 17.6 20.85
Naga Siren icon.png Naga Siren 3 6.5 14.2 19.7 22.45
Nature's Prophet icon.png Nature's Prophet 0 3.67 12.07 18.07 21.07
Necrophos icon.png Necrophos 1 3 6.03 8.2 9.28
Night Stalker icon.png Night Stalker 2 5 10.13 13.8 15.63
Nyx Assassin icon.png Nyx Assassin 1 4 9.83 14 16.08
Ogre Magi icon.png Ogre Magi 5 7.33 10.83 13.33 14.58
Omniknight icon.png Omniknight 2 4.5 9.17 12.5 14.17
Oracle icon.png Oracle 1 3.5 7.47 10.3 11.72
Outworld Destroyer icon.png Outworld Destroyer 2.5 6.17 9.9 12.57 13.9
Pangolier icon.png Pangolier 1 4 11.47 16.8 19.47
Phantom Assassin icon.png Phantom Assassin 1 4.83 12.77 18.43 21.27
Phantom Lancer icon.png Phantom Lancer -1 3.33 10.8 16.13 18.8
Phoenix icon.png Phoenix -1 1 4.5 7 8.25
Primal Beast icon.png Primal Beast 2 4.5 6.83 8.5 9.33
Puck icon.png Puck -3 0.67 6.5 10.67 12.75
Pudge icon.png Pudge -1 1.33 4.6 6.93 8.1
Pugna icon.png Pugna 0 4 7.03 9.2 10.28
Queen of Pain icon.png Queen of Pain 0 3.67 9.5 13.67 15.75
Razor icon.png Razor -1 2.67 8.73 13.07 15.23
Riki icon.png Riki 3 6 9.27 11.6 12.77
Rubick icon.png Rubick 0 3.83 9.67 13.83 15.92
Sand King icon.png Sand King 0 3.17 7.37 10.37 11.87
Shadow Demon icon.png Shadow Demon 0 3 8.13 11.8 13.63
Shadow Fiend icon.png Shadow Fiend 1 4.33 12.5 18.33 21.25
Shadow Shaman icon.png Shadow Shaman 2 4.67 8.4 11.07 12.4
Silencer icon.png Silencer -1 2.67 8.27 12.27 14.27
Skywrath Mage icon.png Skywrath Mage -2 0.17 2.03 3.37 4.03
Slardar icon.png Slardar 3 5.83 11.43 15.43 17.43
Slark icon.png Slark 0 3.5 7.47 10.3 11.72
Snapfire icon.png Snapfire 1 3.67 8.1 11.27 12.85
Sniper icon.png Sniper -1 3.5 10.97 16.3 18.97
Spectre icon.png Spectre 1 5.17 10.07 13.57 15.32
Spirit Breaker icon.png Spirit Breaker 2 4.83 8.8 11.63 13.05
Storm Spirit icon.png Storm Spirit 1 4.67 9.1 12.27 13.85
Sven icon.png Sven 0 3.5 8.63 12.3 14.13
Techies icon.png Techies 3 5.33 8.37 10.53 11.62
Templar Assassin icon.png Templar Assassin 1 4.83 12.3 17.63 20.3
Terrorblade icon.png Terrorblade 5 8.67 18 24.67 28
Tidehunter icon.png Tidehunter 0 2.5 6 8.5 9.75
Timbersaw icon.png Timbersaw 0 2.67 6.4 9.07 10.4
Tinker icon.png Tinker 2 4.17 6.97 8.97 9.97
Tiny icon.png Tiny 0 0 0 0 0
Treant Protector icon.png Treant Protector -1 1.5 6.17 9.5 11.17
Troll Warlord icon.png Troll Warlord -1 2.5 10.2 15.7 18.45
Tusk icon.png Tusk 1 4.83 9.73 13.23 14.98
Underlord icon.png Underlord 3 5 8.73 11.4 12.73
Undying icon.png Undying 1 2.67 5.47 7.47 8.47
Ursa icon.png Ursa 1 4 10.07 14.4 16.57
Vengeful Spirit icon.png Vengeful Spirit 0 3.33 10.8 16.13 18.8
Venomancer icon.png Venomancer 0 4 10.53 15.2 17.53
Viper icon.png Viper -2 1.5 7.8 12.3 14.55
Visage icon.png Visage -1 0.83 3.87 6.03 7.12
Void Spirit icon.png Void Spirit -1 2.17 7.3 10.97 12.8
Warlock icon.png Warlock 1 2.67 5 6.67 7.5
Weaver icon.png Weaver 0 2.83 10.07 15.23 17.82
Windranger icon.png Windranger -1 1.83 5.1 7.43 8.6
Winter Wyvern icon.png Winter Wyvern 0 2.67 6.63 9.47 10.88
Witch Doctor icon.png Witch Doctor 0 2.17 5.43 7.77 8.93
Wraith King icon.png Wraith King -1 1.67 5.63 8.47 9.88
Zeus icon.png Zeus 2 3.83 6.63 8.63 9.63

Main Armor Sources[]

These abilities directly manipulate Agility attribute symbol.png agility points and therefore it affects main armor instead.

1 Only affects Agility attribute symbol.png agility heroes.

Armor Negating Sources[]

Some abilities negate or ignore a unit's main armor by reducing or increasing armor based on the unit's main armor, effectively removing a percentage of the armor on the target. Armor negation only affects the armor value of units, their defense class is unaffected and still reduces damage normally.

Armor Negating Sources
  • Marksmanship icon.png
    Proc Chance: 20%/30%/40%
    Main Armor Reduction: 100%
    Has a chance to completely ignore the target's main armor value on attack, dealing damage as if they had 0 main armor.
  • Natural Order icon.png
    Base Armor Reduction: 40%/60%/80%/100%
    The effects is provided by an aura, affects nearby enemies. The reduction is based on the enemies' main armor. The debuff lingers for 1 second.


Example
How much main armor Terrorblade minimap icon.png Terrorblade with a Blade of Alacrity icon.png Blade of Alacrity at Level 7 has?
Base Armor: 5
Base Agility attribute symbol.png Agility and agility gain: 22 and 4 per level
Blade of Alacrity icon.png Blade of Alacrity bonus agility: 10
Terrorblade minimap icon.png Terrorblade has a total of 15 main armor in this example.

Bonus Armor[]

Bonus armor is the armor value shown in green numbers with a plus on the left, right after the white armor number on a unit's statistics. Whenever an armor granting item or armor increasing ability shows a +Value Armor, e.g. Blade Mail icon.png Blade Mail +6 Armor, it increases the bonus armor of the affected unit.

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

Sources of multiple bonus armor stack additively.

Armor Negation sources do not affect bonus armor.

Example1
How much total armor does a Terrorblade minimap icon.png Terrorblade with a Blade of Alacrity icon.png Blade of Alacrity and Blade Mail icon.png Blade Mail at Level 7 has?
Base Armor: 5
Base Agility attribute symbol.png Agility and gain: 22 + 4
Blade of Alacrity icon.png Blade of Alacrity bonus agility: 10
Blade Mail icon.png Blade Mail bonus armor: 6
Terrorblade minimap icon.png Terrorblade has 21 total armor in this example.
Example 2
Terrorblade minimap icon.png Terrorblade from the previous example is now affected by Level 3 Natural Order. How much total armor does he have now?
Level 3 Natural Order Armor Negation: 80%
Terrorblade minimap icon.png Terrorblade has 9 total armor in this example.

Modifying Armor[]

A lot of abilities and items have abilities that grant or reduce armor.

These changes only affect bonus armor, and are never added to the main armor.

Armor 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.
3 Affects the player-controlled creep.
1 Affects the player-controlled creep.

Talents[]

The following heroes have a Talent talent that grants them bonus armor.

Bonus Level 10 Level 15 Level 20 Level 25
Left Right Left Right Left Right Left Right
Armor
  • Spirit Breaker minimap icon.png +4
  • Dark Seer minimap icon.png +6
  • Pudge minimap icon.png +4
  • Bane minimap icon.png +5
  • Marci minimap icon.png +5
  • Underlord minimap icon.png +5

Besides these, the following heroes have talents which increase the armor of the units they summon

Specific Summons Armor Bonus Talent

Items[]

The following items increase a unit's armor. The effects are limited to the item's owner, which must have the item equipped.

Items that provide armor bonus by flat amount and Agility:

Bonus Agility and Bonus Armor
Item Value Item Cost Cost/Value Point
Helm of the Dominator icon.png Helm of the Dominator 7 2400 Gold 342.86 Gold
Helm of the Overlord icon.png Helm of the Overlord 8.17 6175 Gold 756.12 Gold
Solar Crest icon.png Solar Crest 6.83 2625 Gold 384.15 Gold
Spirit Vessel icon.png Spirit Vessel 2.33 2940 Gold 1260 Gold
Urn of Shadows icon.png Urn of Shadows 2.33 880 Gold 377.14 Gold

These items have a flat armor bonus to the hero who has them equipped.

Flat Bonus Armor
Item Value Item Cost Cost/Value Point
Arcane Ring icon.png Arcane Ring 2 N/A N/A
Arcanist's Armor icon.png Arcanist's Armor 5 N/A N/A
Armlet of Mordiggian (Inactive) icon.png Armlet of Mordiggian 6 2500 Gold 416.67 Gold
Assault Cuirass icon.png Assault Cuirass 10 5125 Gold 512.5 Gold
Blade Mail icon.png Blade Mail 6 2100 Gold 350 Gold
Blast Rig icon.png Blast Rig 7 N/A N/A
Broom Handle icon.png Broom Handle 4 N/A N/A
Buckler (Inactive) icon.png Buckler 1 425 Gold 425 Gold
Chainmail icon.png Chainmail 4 550 Gold 137.5 Gold
Cloak of Flames icon.png Cloak of Flames 4 N/A N/A
Crimson Guard icon.png Crimson Guard 6 3600 Gold 600 Gold
Dragon Scale icon.png Dragon Scale 5 N/A N/A
Ex Machina icon.png Ex Machina 20 N/A N/A
Guardian Greaves icon.png Guardian Greaves 4 5100 Gold 1275 Gold
Helm of Iron Will icon.png Helm of Iron Will 6 975 Gold 162.5 Gold
Lotus Orb icon.png Lotus Orb 10 3850 Gold 385 Gold
Medallion of Courage icon.png Medallion of Courage 5 1025 Gold 205 Gold
Mekansm icon.png Mekansm 4 1875 Gold 468.75 Gold
Nullifier icon.png Nullifier 8 4725 Gold 590.63 Gold
Phase Boots icon.png Phase Boots 4 1500 Gold 375 Gold
Platemail icon.png Platemail 10 1400 Gold 140 Gold
Revenant's Brooch icon.png Revenant's Brooch 8 6200 Gold 775 Gold
Ring of Protection icon.png Ring of Protection 2 175 Gold 87.5 Gold
Shiva's Guard icon.png Shiva's Guard 15 4850 Gold 323.33 Gold
Soul Ring icon.png Soul Ring 2 700 Gold 350 Gold
The Leveller icon.png The Leveller 5 N/A N/A
Witch Blade icon.png Witch Blade 6 2600 Gold 433.33 Gold

These items increase the hero's armor through the agility they provide.

Agility Base Armor
Item Value Item Cost Cost/Value Point
Band of Elvenskin icon.png Band of Elvenskin 1 450 Gold 450 Gold
Blade of Alacrity icon.png Blade of Alacrity 1.67 1000 Gold 600 Gold
Book of Shadows icon.png Book of Shadows 2.17 N/A N/A
Butterfly icon.png Butterfly 5 4975 Gold 995 Gold
Circlet icon.png Circlet 0.33 155 Gold 465 Gold
Crown icon.png Crown 0.67 450 Gold 675 Gold
Diffusal Blade 1 icon.png Diffusal Blade 2.5 2500 Gold 1000 Gold
Dragon Lance icon.png Dragon Lance 2.67 1900 Gold 712.5 Gold
Eaglesong icon.png Eaglesong 4.17 2800 Gold 672 Gold
Ethereal Blade icon.png Ethereal Blade 0.83 4650 Gold 5580 Gold
Ghost Scepter icon.png Ghost Scepter 0.83 1500 Gold 1800 Gold
Gleipnir icon.png Gleipnir 2.33 6150 Gold 2635.71 Gold
Helm of the Dominator icon.png Helm of the Dominator 1 2400 Gold 2400 Gold
Helm of the Overlord icon.png Helm of the Overlord 1.17 6175 Gold 5292.86 Gold
Hurricane Pike icon.png Hurricane Pike 3.33 4450 Gold 1335 Gold
Iron Branch icon.png Iron Branch 0.17 50 Gold 300 Gold
Linken's Sphere icon.png Linken's Sphere 2.67 4600 Gold 1725 Gold
Magic Wand icon.png Magic Wand 0.5 450 Gold 900 Gold
Manta Style icon.png Manta Style 4.33 4600 Gold 1061.54 Gold
Meteor Hammer icon.png Meteor Hammer 1.33 2350 Gold 1762.5 Gold
Mirror Shield icon.png Mirror Shield 1.67 N/A N/A
Ninja Gear icon.png Ninja Gear 4.17 N/A N/A
Ocean Heart icon.png Ocean Heart 0.83 N/A N/A
Pig Pole icon.png Pig Pole 1 N/A N/A
Ring of Aquila (Active) icon.png Ring of Aquila 1.5 N/A N/A
Rod of Atos icon.png Rod of Atos 2 2750 Gold 1375 Gold
Sange and Yasha icon.png Sange and Yasha 2.67 4100 Gold 1537.5 Gold
Scythe of Vyse icon.png Scythe of Vyse 1.67 5675 Gold 3405 Gold
Slippers of Agility icon.png Slippers of Agility 0.5 140 Gold 280 Gold
Solar Crest icon.png Solar Crest 0.83 2625 Gold 3150 Gold
Spell Prism icon.png Spell Prism 1.33 N/A N/A
Spirit Vessel icon.png Spirit Vessel 0.33 2940 Gold 8820 Gold
Swift Blink icon.png Swift Blink 4.17 6800 Gold 1632 Gold
Ultimate Orb icon.png Ultimate Orb 1.67 2050 Gold 1230 Gold
Urn of Shadows icon.png Urn of Shadows 0.33 880 Gold 2640 Gold
Vambrace (Agility) icon.png Vambrace (Agility) 1.67 N/A N/A
Vambrace (Intelligence) icon.png Vambrace (Intelligence) 0.83 N/A N/A
Vambrace (Strength) icon.png Vambrace (Strength) 0.83 N/A N/A
Veil of Discord icon.png Veil of Discord 0.67 1525 Gold 2287.5 Gold
Yasha icon.png Yasha 2.67 2050 Gold 768.75 Gold
Yasha and Kaya icon.png Yasha and Kaya 2.67 4100 Gold 1537.5 Gold

Armor Reducing 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.

Armor Corruption[]

Armor Corruption is granted by choosing a Talent Talent, that causes hero attacks to reduce armor of the attacked target.

Armor Corruption
Cannot be used by illusions. Not disabled by Break. Pierces spell immunity.
Armor Corruption icon.png
Ability
Passive
Affects
Enemies
There is no description for this ability.
Armor Reduction: Varies
Duration: 10
Buff/Debuff
Modifiers [?]
modifier_armor_corruption

Notes:

  • Successive attacks do not stack the debuff, but refresh the duration instead.
  • The attacks first apply the debuff, then their own damage.
  • Works against wards, buildings, and allied units.
  • Fully stacks with any other items or other sources of Armor Corruption.

The following heroes have a Talent talent that grants them Armor Corruption.

Bonus Level 10 Level 15 Level 20 Level 25
Left Right Left Right Left Right Left Right
Armor Corruption
  • Visage minimap icon.png -1.5
  • Hoodwink minimap icon.png -4

Pure Damage[]

Main Articles: Damage Types and HP Removal

Pure Damage is a damage type that is not reduced by Armor or Magic Resistance. It is also not amplified by magical damage amplification abilities, fully ignores Armor and Damage Block. It does not affect invulnerable units.

There are a few sources that can manipulate Pure Damage, with Dispersion being one of them. This mechanic is called damage reduction. Pure damage affects units with Spell Immunity (because spell immunity does not block damage), but that does not mean that an ability that deals pure damage is able to target spell immune units.

Abilities Based on Armor[]

Armor Based Ability Effects
  • Battle Hunger icon.png
    Armor as Damage per Second: 100% (Talent 200%)
    Non-Hero Armor Multiplier: 0.5
    Deals damage based on the hero's armor.

Damage Multiplier[]

All units, including buildings, have an inherent base armor value and attack 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.

Damage Multiplier is also used to calculate a unit's Effective HP (EHP). The lower the damage multiplier, the higher the Effective HP of a unit, vice versa.

Armor Formula Base b Armor Formula Factor f
1 0.06

For any real-valued armor, the damage multiplier is defined as

With DMu being the Damage Multiplier and R the armor value.

The damage multiplier limits are 0 and 2, for infinitely positive and negative armor, respectively. Expand the table below for more detailed information on how much positive and negative armor affects damage multiplier.

Examples
Armor (+) Multiplier Armor (-) Multiplier
1 94% -1 106%
2 89% -2 111%
3 85% -3 115%
4 81% -4 119%
5 77% -5 123%
6 74% -6 126%
7 70% -7 130%
8 68% -8 132%
9 65% -9 135%
10 63% -10 138%
11 60% -11 140%
12 58% -12 142%
13 56% -13 144%
14 54% -14 146%
15 53% -15 147%
16 51% -16 149%
17 50% -17 150%
18 48% -18 152%
19 47% -19 153%
20 45% -20 155%
21 44% -21 156%
22 43% -22 157%
23 42% -23 158%
24 41% -24 159%
25 40% -25 160%
26 39% -26 161%
27 38% -27 162%
28 37% -28 163%
29 36% -29 164%
30 36% -30 164%
31 35% -31 165%
32 34% -32 166%
33 34% -33 166%
34 33% -34 167%
35 32% -35 168%
36 32% -36 168%
37 31% -37 169%
38 30% -38 170%
39 30% -39 170%
40 29% -40 171%
41 29% -41 171%
42 28% -42 172%
43 28% -43 172%
44 27% -44 173%
45 27% -45 173%

Effective HP[]

Relationships between Effective HP%, damage multiplier and armor

The total amount of physical damage a unit can take due to the armor it has is known as Effective HP (or EHP). 16.66 armor adds 100% to EHP. This means a unit with 1000 health and 16.66 armor can take 2000 physical damage. The formula adds 6% EHP per point of armor regardless of the previous armor value.

However, EHP value is of a diminished benefit as a player gaining 1 armor from 0 armor would increase EHP from 100% to 106%, while a player gaining 1 armor from 50 armor would increase EHP from 400% to 406%. On the other hand, the effectiveness of armor is much lower at negative values (refer to the attached graph). Total EHP trends downwards towards 50%, meaning a unit with 1000 health and infinitely low armor would still be able to take 500 physical damage. At this point, losing or gaining 1 armor has essentially no effect.

Armor -40 -30 -20 -10 0 10 20 30 40
Effective HP 586.21 608.7 647.06 727.27 1000 1600 2200 2800 3400

This definition of EHP assumes all damage taken is physical. EHP against magical damage (such as Laguna Blade or Finger of Death) is modified by magic resistance.

Effective HP against physical damage is defined as

With CHP being the Current Health and DMu the Damage Multiplier.

Example 1
A Level 25 Sven minimap icon.png Sven has a total health of 2176 and 12.3 points of armor without any items. What is his effective HP against physical damage?
Sven minimap icon.png Sven's damage multiplier is 0.575374 in this example.
Sven minimap icon.png Sven's effective HP against physical damage in this example is 3781.89.
Example 2
The same Level 25 Sven minimap icon.png Sven from the previous example (has a total health of 2176) is affected by a Level 3 Corrosive Haze, and his armor is now -7.7. What is his effective HP against physical damage?
Sven minimap icon.png Sven's damage multiplier is 1.31601 in this example.
Sven minimap icon.png Sven's effective HP against physical damage in this example is 1653.49.

Recent Changes[]

Main Article: Armor/Changelogs
Version
Description
  • Attack Types and Armor Types are now represented through abilities, most damage remains unchanged.
  • Added the new following attack type abilities:
    • Runty has 25% and 30% attack damage reduction against Heroes and Reinforced units respectively.
    • Piercing has 50% and 65% attack damage reduction against Heroes and Reinforced units respectively.
      • However, they deal 50% more attack damage against Non-Hero units.
    • Reinforced has 50%, 30% and 65% incoming attack damage reduction against Heroes, Non-Hero units, and Piercing units respectively.
      • However, they deal 50% more attack damage against other Reinforced units.
  • The following abilities are not acquirable in any way (e.g. Devour etc.).
  • The following units now have the Piercing ability:
  • The following units now have the Reinforced ability:
  • The following units now have the Runty ability:
  • Enigma Eidolon icon.png Eidolon, Nature's Prophet Treant icon.png Treant and Lycan Wolf icon.png Lycan Wolf no longer have the Basic attack class.
  • Neutral creeps now all have the standard attack type, and their damage are adjusted so that the net damage is similar.
  • Changed the Armor formula
  • Old: (0.052 × MainArmor)/(0.9 + 0.048 × |MainArmor|)
  • New: (0.06 × MainArmor)/(1 + 0.06 × |MainArmor|)


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