Sejuani

Sejuani is a pure tank whose strength comes from a snowballing freeze mechanic that turns sheer toughness into hard crowd control. Her passive, Fury of the North, gives her Frost Armor (bonus armor, magic resist and immunity to slows) whenever she has gone a stretch without fighting. That means she walks into every fight sturdier than her base stats hint at, and she can shatter the armor over stunned foes to deal extra damage.

Her rhythm in combat is deliberate and rewarding. Arctic Assault lunges forward, launching enemies into the air and halting on the first champion it hits, so it works as a surgical way to start a fight rather than a clumsy one. Winter’s Wrath comes next with two mace strikes that deal damage, slow targets and build Frost stacks. When a champion hits maximum Frost, Permafrost locks them down with a stun, a point-and-click lockdown she earns by staying on the offensive instead of landing one perfect skillshot.

Glacial Prison spreads that control across the enemy roster. She hurls a bola that stuns the first champion it touches, then bursts into an ice storm that slows everyone nearby. Hitting a priority target with it often settles a teamfight before any real damage has been dealt.

Rated 4 out of 10 for difficulty, Sejuani is fairly easy to pick up, though her damage output is modest and she relies on teammates to make use of the stuns she sets up. In this data set she is played in the top lane, where she performs best within a well-coordinated team. She suits players who like to open fights: someone who chooses the moment, takes the counterattack head-on and chains crowd control while the carries finish the job.