
Vanguard · physical (AD) damage
Later items show higher win rates partly because games that last that long are usually already being won. Compare items within a slot, not across slots.
Resolve
Grasp of the Undying
Aftershock
Guardian
Demolish
Font of Life
Shield Bash
Conditioning
Second Wind
Bone Plating
Overgrowth
Revitalize
Unflinching
Inspiration
Glacial Augment
Unsealed Spellbook
First Strike
Hextech Flashtraption
Magical Footwear
Cash Back
Triple Tonic
Time Warp Tonic
Biscuit Delivery
Cosmic Insight
Approach Velocity
Jack Of All Trades

Based on 7,756 games · 50.8% win rate · High elo · patch 26.20.
Later items show higher win rates partly because games that last that long are usually already being won. Compare items within a slot, not across slots.
Sorcery
Summon Aery
Arcane Comet
Deathfire Touch
Axiom Arcanist
Manaflow Band
Nimbus Cloak
Transcendence
Celerity
Absolute Focus
Scorch
Waterwalking
Gathering Storm
Domination
Electrocute
Dark Harvest
Hail of Blades
Cheap Shot
Taste of Blood
Sudden Impact
Sixth Sense
Grisly Mementos
Deep Ward
Treasure Hunter
Relentless Hunter
Ultimate Hunter

Based on 138 games · 54.3% win rate · High elo · patch 26.20.

Alistar charges his roar by stunning or displacing enemy champions or when nearby enemies die. When fully charged he heals himself all nearby allied champions.

Alistar smashes the ground, dealing damage to nearby enemies and tossing them into the air.

Alistar rams a target with his head, dealing damage and knocking the target back.

Alistar tramples nearby enemy units, ignoring unit collision and gaining stacks if he damages an enemy champion. At full stacks Alistar's next basic attack against an enemy champion deals additional magic damage and stuns them.

Alistar lets out a wild roar, removing all crowd control effects on himself, and reducing incoming physical and magical damage for the duration.
Q Pulverize
W HeadbuttStuntenacity helpsFROM
P Triumphant Roar
E TrampleSome of their lockdown (airborne) ignores tenacity, so you dodge it; you can't cleanse or Merc' through it.
Tap or hover a crowd-control type to see which ability it comes from.