Life steal is an offensive stat which grants 
healing equal to a percentage of the damage dealt by basic attacks, including those that are modified (such as 
Siphoning Strike or Spellblade). It applies to abilities that trigger 
on-hit effects (e.g. 
Mystic Shot, 
Parrrley, 
Steel Tempest). It does not benefit from 
Heal Power. Most items that deal on-hit damage benefit from life steal.
The heal is based on the post-mitigation damage dealt, or after sources of armor, magic resistance, and damage reduction are taken into account to the damage.
All champions have 0% base life steal, but it can be increased by some items, runes, and abilities.
Gold Value
- Life steal has a gold value of
37.5 per point.
Contents
Damage which applies life steal
Generally speaking, all 
basic damage applies life steal by default, regardless of subtype: 
physical damage dealt by basic attacks, 
magic damage dealt by 
Corki's 
Hextech Munitions basic attacks and 
true damage dealt by 
Camille's 
Precision Protocol all restore health based on the damage dealt in conjunction with life steal.
For damage types other than basic damage to apply life steal, they have to be tagged as such:
"Applies life steal" is a damage tag that gives an ability the property of having a damage source apply life steal like basic attack damage would.
This tag is located on some abilities that deal spell damage (e.g. 
Samira's 
Flair and 
Inferno Trigger) and items that deal on-hit damage.
Life steal does not have a penalty for area of effect abilities and is always applied to the damage dealt at 100% effectiveness, unless otherwise specified. Unlike Vamp, the "applies life steal" tag applies life steal directly and does not heal based on damage dealt and the life steal stat. Therefore healing modifiers that affect life steal also affect abilities with the "applies life steal" tag.
On-hit effects that benefit from life steal
- The following items benefit from life steal: Ardent Censer, Black Cleaver, Blade of the Ruined King, Divine Sunderer, Essence Reaver, Guinsoo's Rageblade, Lich Bane, Muramana, Nashor's Tooth, Rageknife, Recurve Bow, Sheen, Titanic Hydra, Trinity Force, Wit's End, Zeke's Convergence.
- The following items do not benefit from life steal: Dead Man's Plate, Doran's Ring, Doran's Shield, Duskblade of Draktharr, Kircheis Shard, Kraken Slayer, Noonquiver, Rapid Firecannon, Stormrazor, Tear of the Goddess.
Increasing life steal
The following grant life steal.
Items
| Item | Cost | Amount | Availability |
|---|---|---|---|
 Blade of the Ruined King | 3200  | 12% | All maps |
 Bloodthirster | 3400 | 20% | All maps |
 Bloodward | 3400 | 15% | All maps |
 Guardian's Hammer | 950 | 10% | Howling Abyss |
 Immortal Shieldbow | 3400 | 12% | All maps |
 Vampiric Scepter | 900 | 10% | All maps |
Champion abilities
Runes
- Legend: Bloodline
- Revitalize (while below 40% health)
Attack drain
The following effects are similar to life steal, but are either 
Vamp or another form of prompted healing, which benefit from Heal Power.
Items
Champion abilities
Runes
Interactions with heals and shields
| Type |  Heal and Shield Power
|
 Spirit Visage
|
 Revitalize*
|
 Grievous Wounds
|
|---|---|---|---|---|
 Health regeneration |
 |
 |
|
|
| Life steal |
|
|
|
|
 Omnivamp |
|
|
|
|
| Physical vamp |
|
|
|
|
| Drain effects |
|
|
|
|
| Self heals | |
|
|
|
| Self shields | |
|
|
|
| Incoming heals | |
|
|
|
| Incoming shields | |
|
|
|
| Outgoing heals | |
|
|
|
| Outgoing shields | |
|
|
|
 Bonus health |
|
|
|
|
Increasing healing
Champion abilities
Items
Runes
- Revitalize (while below 40% health)
Notes
- Life steal stacks additively, and has no cap.
- Spirit Visage's passive is a unique multiplicative increase. For example, if a unit had 10% life steal, the 25% increase would be calculated as: 10% × 1.25 = 12.5% life steal.
- Life steal does not apply to damage dealt to structures.
- Life steal applies on damage to wards after the damage is reduced to 1, restoring effectively no health.
- Grievous Wounds reduces the health restored by life steal.
- Blade of the Ruined King's bonus damage healing is considered a drain effect, even though it scales off life steal. This means that the healing is affected by Heal Power.
Trivia
Last updated: October 12, 2020 - V10.20
- The maximum life steal is reached with Sion at 213.75%.
- Items:
- 1 Bloodthirster
- 1 Bloodward
- 1 Blade of the Ruined King
- 1 Spirit Visage (Lifesteal multiplier and healing amplifier)
- 1
- Runes:
- Buffs:
- Relevant math:
Last updated: October 12, 2020 - V10.20
- The maximum achievable percentage healing based on damage dealt by attack damage by a playable champion is 235.125% of damage dealt on Sion. Note that Glory in Death reduces incoming healing that is not lifesteal or spell vamp by 100%. Revitalize is a multiplicative bonus that applies after Spirit Visage increases the life steal stat by 30%. Heal and Shield power does not apply. Not being lifesteal or spellvamp, Conqueror and Elixir of Wrath can never provide bonus healing.
- Items:
- 1 The Bloodthirster
- 1 Blade of the Ruined King
- 1 Bloodward
- 1 Spirit Visage (Lifesteal multiplier and healing amplifier)
- 1
- Runes:
- Legend: Bloodline
- Revitalize (Healing multiplier)
- Buffs:
- Relevant math:
| Offensive |  Ability power ·  Attack damage ·  Attack speed ·  Critical strike chance ·  Critical strike damage ·  Armor penetration ·  Magic penetration · Life steal · Omnivamp · Physical vamp ·  True damage
|
|---|---|
| Defensive | Heal and shield power · Health · Health regeneration ·  Armor ·  Magic resistance ·  Tenacity ·  Slow resist
|
| Utility |  Ability haste ·  Energy ·  Energy regeneration ·  Mana ·  Mana regeneration
|
| Other |  Experience ·  Gold generation ·  Movement speed ·  Range
|
