Spell damage is all damage which is not dealt by physical attacks. This includes all spells which deal magical, physical or pure 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 amplification
Spell damage can be directly amplified. Each point of Intelligence increases a hero's spell damage by Expression error: Unexpected round operator.%, which equates to 1% spell damage for every Expression error: Missing operand for /. points of intelligence. Spell damage amplification of multiple sources stacks additively. The amplification does not only affect spell damage dealt against enemies, it also causes damage afflicted to allies or the own unit to get amplified.
Currently there is no unit ability that directly amplifies spell damage, but a couple of heroes have perks in the talents tree.
Spell Amplification: 10%
Spell Amplification: 6%- Spell Amplification: 15%
- Spell Amplification: 10%
- Spell Amplification: 8%
- Spell Amplification: 12%
- Spell Amplification: 12%
- Spell Amplification: 6%
- Spell Amplification: 8%
- Spell Amplification: 8%
- Spell Amplification: 75%
Only affects spells stolen by Spell Steal. - Spell Amplification: 10%
- Spell Amplification: 6%
- Spell Amplification: 6%
These items passively increase the owner's spell damage amplification by merely having them equipped. They either grant a flat bonus, or bonus through intelligence.
Unaffected by amplification
There are certain cases of abilities that ignore spell amplification. It is important to note that those spells cannot spell lifesteal, too.
In general abilities related to health manipulation (instantly killing effect, health cost, delayed damage) and regular attacks (cleave, instant attacks) do not benefit from spell amplification. The exceptions to this rule are splash, Tree Grab, and Psi Blades which are still amplified.
- Battle Fury – Cleave
- Blade Mail – Damage Return
- Kunkka – Tidebringer (Cleave)
- Kunkka – Ghostship (Rum Wear-Off Damage)
- Luna – Moon Glaives
- Magnus – Empower (Cleave)
- Necrophos – Heartstopper Aura
- Oracle – False Promise
- Sven – Great Cleave
- Lua error: Found no Cargo data for "Techies - Remote Mines".
- Techies – Proximity Mines
- Terrorblade – Sunder
- Undying – Soul Rip (AoE Health Drain)
- Zeus – Nimbus
Version history
- Damage return from Blade Mail is no longer increased by Spell Amplification
- Moon Glaives no longer gets boosted by Spell Amplification.
- Cleave no longer gets boosted by Spell Amplification.
- Spell Lifesteal does not trigger heal for things that don't receive spell amplification (Moon Glaives, Cleave).
See also
