
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.
Precision
Press the Attack
Lethal Tempo
Fleet Footwork
Conqueror
Absorb Life
Triumph
Presence of Mind
Legend: Alacrity
Legend: Haste
Legend: Bloodline
Coup de Grace
Cut Down
Last Stand
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 4,159 games · 51.5% 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.
Resolve
Grasp of the Undying
Aftershock
Guardian
Demolish
Font of Life
Shield Bash
Conditioning
Second Wind
Bone Plating
Overgrowth
Revitalize
Unflinching
Sorcery
Summon Aery
Arcane Comet
Deathfire Touch
Axiom Arcanist
Manaflow Band
Nimbus Cloak
Transcendence
Celerity
Absolute Focus
Scorch
Waterwalking
Gathering Storm

Based on 1,005 games · 44.7% 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.
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 57 games · 45.6% win rate · High elo · patch 26.20.

Udyr has four basic Abilities that swap between Stances and can Recast an Ability to renew it with Ultimate benefits. Additionally, after using an Ability, Udyr's next two Attacks gain Attack Speed.

Udyr gains attack speed and his next two attacks deal bonus physical damage. Recast: Gain even more attack speed, and the next two attacks call lightning to strike the target.

Udyr gains a shield and his next two attacks heal him. Recast: Gain an even bigger shield and heal based on max health over the next couple seconds.

Udyr gains movement speed and his first attack against each target will Stun them. Recast: Gain even more movement speed and immunity to immobilizing effects for a couple seconds.

Udyr surrounds himself in a glacial storm, damaging and slowing nearby enemies. Recast: Empower and unleash the storm, causing it to track enemies and deal additional damage.
E Blazing StampedeRoottenacity helpsFROM
E Blazing StampedeSlowignores tenacityFROM
R Wingborne StormTheir hard CC is tenacity-reducible, so Mercury's Treads and tenacity items shorten their lockdown.
Tap or hover a crowd-control type to see which ability it comes from.