Buff

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Vayne using Final Hour.

A buff is any status effect given to a champion or a minion that gives them a beneficial boost to their performance. The opposite is called a debuff. Buffs can benefit almost any attribute of a character, such as health, mana, attack damage, and ability power, but may provide more than mere statistical changes in some cases. Most buffs are temporary, but some may be permanent (such as Tristana's Draw a Bead permanently granting a range increase for her attacks and abilities). Most, but not all, are lost upon death.

Some buffs can stack up to a predetermined number of times, but most buffs will not stack with themselves. This means that repeated applications of the buff to the same target will not grant any increased effect and will only cause the buff duration to reset.

Certain abilities that have a unique cooldown before they can be used on the same enemy twice such as Yasuo's Sweeping Blade and Udyr's Bear Stance are not considered to be buffs applied to an enemy.

There are several sources for buffs in League of Legends; specifically, abilities, epic monsters, field-specific buffs, items, relics, speed shrines and summoner spells.

Champion abilities

Indefinite

• Aatrox's Blood Well
• Akali's Discipline of Might
• Amumu's Tantrum (Passive)
• Azir's Shurima's Legacy - Will of the Emperor
• Cassiopeia's Deadly Cadence
• Cho'Gath's Feast
• Darius' Apprehend (Passive)
• Diana's Moonsilver Blade
• Dr. Mundo's Adrenaline Rush
• Elise's Spider Swarm and Skittering Frenzy (Passive)
• Fiora's Riposte (Passive)
• Fizz's Nimble Fighter
• Galio's Runic Skin
• Gangplank's Raise Morale (Passive)
• Garen's Courage (Passive)
• Hecarim's Warpath
• Heimerdinger's Techmaturgical Repair Bots (Aura)
• Janna's Tailwind (Aura)
• Jarvan IV's Demacian Standard (Passive)
• Kassadin's Void Stone
• Katarina's Voracity
• Kog'Maw's Caustic Spittle (Passive)
• Malphite's Brutal Strikes (Passive)
• Morgana's Soul Siphon
• Nasus' Soul Eater
• Nocturne's Shroud of Darkness (Passive)
• Olaf's Berserker Rage and Ragnarok (Passive)
• Pantheon's Certain DeathCertain Death
• Poppy's Valiant Fighter
• Rammus' Spiked Shell
• Rek'Sai's Void Rush (Passive)
• Ryze's Overload (Passive) and Desperate Power (Passive)
• Shyvana's Dragonborn
• Singed's Empowered Bulwark
• Sion's Soul Furnace (Passive)
• Tristana's Draw a Bead
• Tryndamere's Battle Fury and Bloodlust
• Udyr's Turtle Stance (Persistent Effect)
• Veigar's Equilibrium
• Vladimir's Crimson Pact
• Yasuo's Way of the Wanderer - Intent
• Zed's Living Shadow (Passive)
• Zilean's Heightened Learning (Aura)
• Zyra's Rampant Growth (Passive)

Conditionally Indefinite

• Evelynn's Shadow Walk (lasts until damage is taken)
• Garen's Perseverance (lasts until damage is taken from an enemy champion, tower or monster)
• Irelia's Ionian Fervor (requires a nearby enemy champion)
• Janna's Zephyr (Passive) (lasts while off cooldown)
• Master Yi's Wuju Style (Passive) (lasts while off cooldown)
• Miss Fortune's Strut (lasts until damage is taken)
• Shaco's Two-Shiv Poison (lasts while off cooldown)
• Taric's Shatter (Passive) (lasts while off cooldown)
• Teemo's Move Quick (Passive) (lasts until damage is taken)
• Wukong's Stone Skin (requires a nearby enemy champion)

Temporary

• Aatrox's Massacre
• Ahri's Orb of Deception
• Akali's Twilight Shroud
• Alistar's Unbreakable Will
• Anivia's Rebirth
• Annie's Molten Shield
• Ashe's Ranger's Focus
• Bard's Caretaker's Shrine
• Blitzcrank's Overdrive
• Braum's Unbreakable and Stand Behind Me
• Darius' Hemorrhage
• Dr. Mundo's Masochism and Sadism
• Draven's Blood Rush
• Elise's Skittering Frenzy (Active)
• Evelynn's Dark Frenzy and Ravage
• Ezreal's Rising Spell Force and Essence Flux (On ally cast, including him)
• Fiora's Duelist and Burst of Speed
• Galio's Bulwark
• Gangplank's Raise Morale (Active) (Aura)
• Garen's Courage (Active)
• Gnar's Rage Gene, Hyper and Hop
• Gragas' Happy Hour and Drunken Rage
• Graves' True Grit and Quickdraw
• Hecarim's Devastating Charge
• Heimerdinger's UPGRADE!!!
• Janna's Eye of the Storm
• Jarvan IV's Demacian Standard (Active) (Aura)
• Jax's Relentless Assault and Grandmaster's Might (Active)
• Jayce's Hextech Capacitor, Acceleration Gate and Hyper Charge
• Jinx's Get Excited!
• Karma's Inspire and Defiance (Aura)
• Katarina's Shunpo
• Kayle's Divine Blessing, Intervention and Righteous Fury
• Kennen's Lightning Rush
• Kha'Zix's Void Assault
• Kog'Maw's Bio-Arcane Barrage
• Lee Sin's Flurry and Iron Will
• Leona's Eclipse
• Lissandra's Iceborn and Frozen Tomb (Self-cast)
• Lucian's Ardent Blaze (On-hit)
• Malphite's Seismic Shard
• Master Yi's Double Strike, Meditate, Wuju Style (Active) and Highlander
• Miss Fortune's Impure Shots (Active)
• Mordekaiser's Creeping Death
• Nami's Surging Tides and Tidecaller's Blessing
• Nasus' Fury of the Sands
• Nidalee's Prowl and Primal Surge
• Nocturne's Duskbringer (Trail) and Shroud of Darkness (Active)
• Nunu's Visionary, Consume and Blood Boil
• Olaf's Vicious Strikes and Ragnarok (Active)
• Pantheon's Aegis Protection
• Poppy's Diplomatic Immunity and Paragon of Demacia
• Quinn's Heightened Senses (Passive)
• Renekton's Dominus
• Rengar's Empowered Savagery Empowered Savagery, Battle Roar, Empowered Battle Roar Empowered Battle Roar and Thrill of the Hunt
• Riven's Blade of the Exile
• Rumble's Scrap Shield
• Ryze's Desperate Power
• Sejuani's Frost Armor
• Shen's Feint
• Shyvana's Burnout
• Singed's Insanity Potion
• Sion's Soul Furnace (Active)
• Sivir's On The Hunt On The Hunt (Aura)
• Skarner's Crystal Slash and Crystalline Exoskeleton
• Sona's Aria of Perseverance (Active) (Aura), Hymn of Valor (Aura) and Song of Celerity (Active) (Aura)
• Talon's Shadow Assault
• Taric's Radiance (Aura)
• Teemo's Camouflage and Move Quick (Active)
• Tristana's Rapid Fire
• Trundle's Chomp, Frozen Domain and Subjugate
• Tryndamere's Undying Rage
• Twitch's Ambush and Rat-Ta-Tat-Tat
• Udyr's Monkey's Agility, Bear Stance (Activation Effect) and Tiger Stance (Activation Effect)
• Urgot's Terror Capacitor and Hyper-Kinetic Position Reverser
• Varus' Living Vengeance
• Vayne's Final Hour
• Vladimir's Tides of Blood
• Volibear's Chosen of the Storm, Frenzy, Rolling Thunder and Thunder Claws
• Warwick's Hunter's Call (Aura)
• Wukong's Cyclone
• Xin Zhao's Battle Cry (Active) and Crescent Sweep
• Yasuo's Last Breath
• Yorick's Unholy Covenant and Omen of Death
• Zac's Let’s Bounce! Let’s Bounce!
• Zilean's Chrono Shift Chrono Shift and Time Warp

Toggled

• Dr. Mundo's Burning Agony
• Elise's Spider Form / Human Form
• Jayce's Transform Transform: Mercury Cannon
• Jinx's Switcheroo!
• Rek'Sai's Burrow / Unburrow
• Warwick's Blood Scent

Neutral buffs

Indefinite

• Dragon Slayer (Summoner's Rift)
• Altars (Twisted Treeline)
• Crystal Scar's Aura
• Howling Abyss' Aura

Temporary

• Crest of Insight (Summoner's Rift)
• Crest of Cinders (Summoner's Rift)
• Hand of Baron (Summoner's Rift)
• Aspect of the Dragon (Summoner's Rift)
• Gift of the Toadstool (Summoner's Rift)
• Gift of Heavy Hands (Summoner's Rift)
• Razor Sharp (Summoner's Rift)
• Crest of Crushing Wrath (Twisted Treeline)
• Ghost Relic (Twisted Treeline)
• Altars (Twisted Treeline)
• Speed Shrine
• Mark of the Conqueror (Crystal Scar)
• Greater Relic (Crystal Scar)

Summoner Spells

• Cleanse
• Chilling Smite
• Ghost
• Heal
• Revive
• Flash (with the Distortion enchantment)
• Teleport (with the Distortion enchantment)

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