Life steal

Life steal (LS) is an offensive stat that restores health to the wielder on all basic attacks, including abilities that modify their basic attacks (such as and ). It is a percent of the basic attack, plus physical damage from modifiers on the attack (such as Spellblade), but not on-hit effects (such as  Shock).

Life steal is calculated from the actual damage done to an enemy, after armor and all other forms of damage reduction. All champions have 0% base life steal. It can be increased with items, runes, masteries, and some champion abilities.

Champion abilities
Note: Only the life steal buff effect of these abilities is shown here, to read more information on each of these abilities, follow the link on each of them.
 * grants % life steal for 4 seconds.
 * permanently grants him % life steal.
 * gives him life steal and 0.5% healing per 1% missing health, which applies to life steal for 6 seconds.
 * grants 100% life steal for the duration of the ability.
 * grants him 100% life steal of the damage for the duration of the ability.

Trivia
Last updated: June 8, 2017 - V7.11
 * The maximum achievable life steal by a playable champion is % on.
 * Runes: +% Life Steal
 * 3 (+3% Life Steal)
 * Masteries: +2% Life Steal
 * 5 points in (+2% Life Steal)
 * Items: +74% Life Steal
 * (+20% Life Steal)
 * (+15% Life Steal)
 * (+15% Life Steal)
 * A combination of two of any of the following items: 212% Life Steal
 * (+25% Heal Amp.)
 * Buffs: +115% Life Steal
 * (+100% Life Steal)
 * (+15% Life Steal)
 * Heal Amplification: +35% Heal Amp.
 * (+25% Heal Amp.)
 * (+8% Heal Amp.)
 * Relevant mathematics:
 * life steal(%2%74%115%)%
 * Items + +  + 74%
 * Runes%
 * Masteries
 * Buffs115%
 * Heal Multiplier
 * Buffs115%
 * Heal Multiplier