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Spell damage
 
 

Illusory Orb icon.png

Spell damage is all damage which is not dealt by physical attacks. This includes all spells which deal magical, physical or pure damage, as well as all items with abilities that deal damage. Even the damage dealt by attack modifiers counts as spell damage, as long as the effect deals its damage in a separate instance from the attack damage.

Magic spell damage is influenced by magic resistance, physical spell damage is influenced by armor and pure damage is not affected by either. All three underlie damage manipulation.

Sources of spell damage[]

Spell Damage Manipulation[]

Spell damage can be directly amplified or reduced. Spell damage manipulation is divided into outgoing and incoming damage manipulation.

Since these are handled separately, they stack multiplicatively with each other.

Outgoing Spell Damage Manipulation[]

A unit that has outgoing spell damage manipulation deals more or less spell damage with any spell damage they apply to any unit. Multiple sources of outgoing spell damage manipulation stack additively.

  • Counterspell icon.png
    Outgoing Spell Damage Reduction: 10%
    Close Additional Outgoing Spell Damage Reduction: 20%
    Requires Aghanim's Shard icon.png Aghanim's Shard. Aura, passively reduces all spell damage enemies within 900 radius deal. The close aura applies to enemies within 300 radius. The 2 auras stack additively with themselves. Does not reduce attack damage.
  • Bloodrage icon.png
    Outgoing Spell Damage Amplification: 15%/20%/25%/30% (Talent 23%/28%/33%/38%)
    Casts a buff on an allied hero.
  • Overcharge icon.png
    Outgoing Spell Damage Amplification: 10%/12%/14%/16%
    Applies a buff on the caster. Transfers to the Tethered ally as well.
  • Arcane Supremacy icon.png
    Outgoing Spell Damage Amplification: 14%/18%/22%/26%
    Passively increases Rubick's spell damage.

Talents[]

The following heroes have a Talent talent that grants them spell damage amplification.

Bonus Level 10 Level 15 Level 20 Level 25
Left Right Left Right Left Right Left Right
Spell Amplification
  • Jakiro minimap icon.png +6%
  • Phoenix minimap icon.png +6%
  • Ancient Apparition minimap icon.png +8%
  • Batrider minimap icon.png +5%
  • Nyx Assassin minimap icon.png +8%
  • Shadow Fiend minimap icon.png +8%
  • Puck minimap icon.png +12%
  • Grimstroke minimap icon.png +15%
  • Timbersaw minimap icon.png +8%
  • Tinker minimap icon.png +10%
  • Lina minimap icon.png +11%
  • Void Spirit minimap icon.png +14%
  • Earth Spirit minimap icon.png +18%

Besides these, the following heroes have other specific spell damage amplification talents

Spell Damage Amplification

Outgoing spell damage amplification granting items[]

Many items grant their owners a spell damage amplification bonus by giving them a direct bonus. The effects are limited to the item's owner, which must have the item equipped.

Spell damage increasing items (One value point equals 1% spell damage amplification)
Item Value Item Cost Cost/Value Point
Bloodstone icon.png Bloodstone 8 5750 Gold 718.75 Gold
Fairy's Trinket icon.png Fairy's Trinket 5 N/A N/A
Kaya icon.png Kaya 8 2050 Gold 256.25 Gold
Kaya and Sange icon.png Kaya and Sange 16 4100 Gold 256.25 Gold
Nether Shawl icon.png Nether Shawl 6 N/A N/A
Null Talisman icon.png Null Talisman 3 505 Gold 168.33 Gold
Timeless Relic icon.png Timeless Relic 15 N/A N/A
Vambrace (Intelligence) icon.png Vambrace (Intelligence) 6 N/A N/A
Yasha and Kaya icon.png Yasha and Kaya 16 4100 Gold 256.25 Gold
Values may include portions from actives or auras.

Incoming spell damage amplification[]

A unit that has incoming spell damage amplification takes more spell damage from any spell damage they receive from any unit. Multiple sources of incoming spell damage amplification stack additively.

Unlike outgoing spell damage amplification, incoming spell damage amplification affects every source of spell damage, as long as it is not flagged as HP Removal.

Incoming spell damage amplification granting abilities[]

  • Hunter's Boomerang icon.png
    Incoming Spell Damage Amplification: 25%
    Debuff Duration: 7
    Tosses a boomerang at the target enemy in an arc. Upon contact, it returns to Hoodwink. The boomerang will deal damage as it passes through or hits enemies, and apply a Hunter's Mark that causes affected enemies to be slowed and be more vulnerable to spell damage and have reduced status resistance.
  • Veil of Discord icon.png
    Incoming Spell Damage Amplification: 18%
    Duration: 16
    Places a debuff on enemies in an area, which causes them to take increased spell damage.

Unaffected by manipulation[]

There are certain cases of abilities that ignore spell damage amplification. It is important to note that those spells cannot spell lifesteal either.

In general abilities related to health manipulation (instantly killing effect, health cost, delayed damage) are not affected by spell damage amplification, neither incoming nor outgoing.

Spell damage dealt by summons is affected by the summons' outgoing spell damage amplification, not by the summoner's (e.g. Death Ward).

On top of the aforementioned general restrictions, the following are not affected by outgoing spell damage amplification (note that they are affected by incoming spell damage amplification normally):

1 The damage of the bouncing attacks acquired via Aghanim's Shard icon.png Aghanim's Shard are unaffected by outgoing spell damage amplification. The Glaives' int-based damage is fully affected, including that of the bounces.

2 The damage of the bouncing attacks acquired via the Talent talent are unaffected by outgoing spell damage amplification. The Overload's area damage is fully affected, including that of the bounces.

Version History[]

Version
Description
  • Damage return from Blade Mail icon.png Blade Mail is no longer increased by outgoing spell amplification.
  • Moon Glaives no longer gets boosted by outgoing spell amplification.
  • Cleave no longer gets boosted by outgoing spell amplification.
  • Spell lifesteal does not trigger heal for things that don't receive spell amplification ( Moon Glaives, Cleave).

Patch History[]

Patch
Description
  • Alt now show their modified/increased spell ampification values at tooltips.


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