Spell vamp

Spell Vamp is a magic stat. The Spell Vamp works as the magic counterpart of Life Steal, but instead of absorbing life from physical attacks, it absorbs life from champion abilities. It works off of activated item effects, summoner spells, and abilities, regardless of the type of damage done. Spell Vamp is calculated from the damage dealt to the enemy (after Magic Resistance).

Items increasing Spell Vamp

 * +40 AP. UNIQUE: +20% Spell Vamp. 1200 Gold.
 * +25% Spell Vamp. +60 Attack Damage, +20% Life Steal, +75 AP, UNIQUE Active: Deals 300 magic damage and slows the target champion by 50% for 3 seconds (700 range). 60 second cooldown. 3625 Gold.
 * +50 AP, UNIQUE Aura: Gives nearby allied champions +30 AP and +25% Spell Vamp. 2100 Gold.

Abilities

 * 's grants +15/25/35%.
 * 's grants 10% spell vamp when she obtains 10 attack damage, increasing by an additional 1% for every 5 attack damage gained thereafter.
 * 's increases his damage based on his health and grants him 9/12/15/18/21% life steal and spell vamp for 6 seconds.
 * 's grants 15/20/25% spell vamp.
 * 's grants 5/10/15/20/25% spell vamp.

Calculations
The amount of health restored with Spell Vamp follows the following formula: where
 * Health Restored = Total Spell Damage * Spell Vamp * Vamp Coefficient
 * Total Spell Damage is the the mitigated spell damage done to every target affected
 * Vamp Coefficient is 1 for single target spells and 1/3 for multi-target spells.

Examples
(assuming targets with 0 Magic Resistance)
 * 25% Spell Vamp on a single-target spell that does 100 Damage will return  health.
 * 30% Spell Vamp on an AoE spell that does 100 AoE Damage to each of 4 targets will return  health.

Related Articles

 * Magic Damage
 * Life Steal