Healing

Healing is the action of replenishing a unit's current health, distinct from the other forms of health restoration (life steal, spell vamp and health regeneration). Healing can be reduced by Healing reduction effects.

Healing cannot increase a unit's current health over its maximum. The act of leveling up and certain champion abilities (such as Lulu's Wild Growth) will increase a unit's current health by the same amount as the increase to their maximum health, but this is not considered a form of healing. As a result, they are not affected by healing reduction.

Healing

Champion abilities

Ally-targeted

• Alistar's Triumphant Roar
• Bard's Caretaker's Shrine
• Fiora's Grand Challenge
• Janna's Monsoon
• Kayle's Celestial Blessing
• Kindred's Lamb's Respite
• Nami's Ebb and Flow
• Nidalee's Primal Surge
• Rakan's Gleaming Quill
• Sona's Aria of Perseverance
• Soraka's Astral Infusion and Wish
• Taric's Starlight's Touch
• Yuumi's Zoomies
• Zilean's Chronoshift

User only

Items

Healing items

Increasing attack or ability drain

• Death's Dance
• Elixir of Wrath
• Hextech Gunblade
• Wit's End

Summoner spells

• Heal
• Smite

Runes

• Conqueror
• Fleet Footwork
• Triumph
• Legend: Bloodline
• Taste of Blood
• Ravenous Hunter
• Grasp of the Undying
• Font of Life
• Second Wind
• Kleptomancy (through potions)
• Biscuit Delivery

General

• Leveling up will restore some maximum health, and some current health. Actual health regained is lower depending on how wounded the champion is upon leveling up.

Map-related

• On Summoner's Rift, Twisted Treeline and Crystal Scar, standing the summoning platform restores health each second.
• Picking a Health Relic on the Howling Abyss.
• Picking a Ghost Relic on Twisted Treeline.
• Picking a Health Relic on the Crystal Scar.
• On Summoner's Rift by slaying a monster that has Healing Sigil ( Ancient Krug, Crimson Raptor, Greater Murk Wolf, Gromp and Rift Scuttler).

Increasing healing strength

Champion abilities

• Olaf's Vicious Strikes
• Trundle's Frozen Domain

Items

• Ardent Censer: +10% (Unique) heal and shield power.
• Forbidden Idol: +5% (Unique) heal and shield power.
• Mikael's Crucible: +20% (Unique) heal and shield power.
• Redemption: +10% (Unique) heal and shield power.
• Salvation: +10% (Unique) heal and shield power.
• Spirit Visage: Passive: Unique: Increases effectiveness of all sources of health restoration by 30% (including health regeneration, life steal and spell vamp).

Runes

• Revitalize

Healing reduction

•  Grievous Wounds is a debuff that reduces all healing received.
• The Howling Abyss map reduces all outsourced healing and regeneration effects by 50%.

Notes

• If a champion dies but immediately after continues active for one ability's champion (ex. Zilean's Chronoshift, Aatrox's World Ender and Sion's Glory in Death) all debuffs disappear, so the consequent heal won't be affected by  Grievous Wounds.
• Note that Sion's Glory in Death heals him back up to 100% maximum health; no healing buffs or debuffs affect this healing.
• Before V9.9, Aatrox's Deathbringer Stance could inflict  Mutilator against enemy champions.

Trivia

• In a role-play setting, healing may represent anything from attending to battle wounds to repairing damaged hardware to replenishing a magical spell that holds a construct together, but outside of its physical representation, its effect is always the same - it serves as a direct increase to a unit's current health.
• Healing can be viewed as the polar opposite of damage. Unlike sources of damage, however, sources of healing are uncommon and the majority cannot be used to heal others - and those that can frequently have large ulterior costs to use.
• Any healing in-game that restores less than 20 health is not shown as the usual +X green text.