Sejuani

Scrap, Stun, and Succeed

Lane harassment and consistent damage output.

Resolve

Durability and crowd control

Aftershock

After immobilizing an enemy champion gain defenses and later deal a burst of magic damage around you.
Font of Life

Impairing the movement of an enemy champion heals nearby allied champions.
Conditioning

After 12 min gain +8 Armor and +8 Magic Resist and increase your Armor and Magic Resist by 3%.
Overgrowth

Gain permanent max health when minions or monsters die near you.

Precision

Improved attacks and sustained damage

Triumph

Takedowns restore 5% of your missing health and grant an additional 20 gold.
Legend: Haste

Takedowns on enemies grant permanent Basic Ability Haste.

Adaptive Force

+9 Adaptive Force

Why Aftershock

Like Courage of the Colossus, Sejuani can reliably proc it for the bonus defenses and extra bit of damage.

Why Font of Life

All 4 of Sejuani's abilities can easily proc Font of Life, and because you naturally stack health the on-hit heal adds up to be considerable for fights.

Why Conditioning

Conditioning's mid-game resists make you an insane front-line tank in teamfights.

Why Overgrowth

Because you naturally itemize stacking a lot of health as Sejuani, Overgrowth doubles-down on that by providing a lot of bonus scaling health based on how much health you've built.

WhyTriumph

Triumph on Sejuani allows you to fronline for you team in teamfights to absorb a lot of damage, and keep going after you pick up assists.

WhyLegend: Haste

Tenacity allows you to stick to your target for repeated autos and help sure an [E] stun.