Sejuani

Arena changes

• I: Damage health ratio changed to 12% of target's maximum health.
• Q: Base damage changed to 110 to 350.
• Q: AP ratio changed to 110% AP.
• Q: Cooldown changed to 17 to 11 seconds.
• E: Champion Frost immunity changed to 5 seconds.
• R: Cooldown changed to 80 to 60 3 seconds.²

• Mirage Blade is an option for Sejuani because she has a dash.³
• Heartsteel can apply to ability damage with Ethereal Weapon, making it a strong option for Sejuani because she has low-cooldown area damage and slow attack speed.⁴
• Death's Touch is less effective on Sejuani because she does not attack often, but Reverberation or Ethereal Weapon can still make it work.⁵

Sometimes, attacks against a team with Sejuani can apply her passive to that team even when she is fighting on another map; the effect may persist through the game, and the affected team cannot trigger her E.⁶

Enemy on-hit effects can apply Sejuani's passive stacks to her teammates, but Sejuani cannot trigger those stacks.⁷

• Trundle's ultimate can reduce Sejuani's resistances below zero.⁸

A Braum, Sejuani and Katarina combination has been played before, and new options may make it viable again.⁹

• Combo Break does not seem to trigger against knock-ups or displacement, including when Sejuani has Reverberation and Mystic Punch.¹⁰

Earlier formats

• Sejuani could burst many champions to about 25% health before they could react, even with a full-tank build.¹¹ 8x2 duos
• Sejuani was solid in Arena, though some players did not use her abilities correctly.¹¹ 8x2 duos
• Cruelty was very strong on Sejuani.¹² 8x2 duos
• Darksteel Talons with attack speed from stat shards was powerful on Sejuani.¹² 8x2 duos
• Sejuani's Q could trigger all stacks of Reverberation's stun, allowing three triggers in roughly two seconds with Q, E and R.¹³ 8x2 duos
• Sejuani, Alistar, Galio and Sylas could use this pretty well.¹⁴ 8x2 duos
• Hexbolt Companion could apply Sejuani's E passive through an ally's on-hit effect, but Sejuani still had to press E.¹⁵ 8x2 duos