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| Passive | Frost | | | | Damaging an enemy with an ability or basic attack grants Sejuani bonus Armor and reduces movement-slowing effects on her. |
| Q | Arctic Assault | 650.0 | 80 / 85 / 90 / 95 / 100 Mana | 15 / 14 / 13 / 12 / 11 | Charges forward, knocking enemies into the air and dealing magic damage equal to 40/70/100/130/160 (+0.4) plus 4/6/8/10/12% of the target's maximum Health (max 300/300/300/300/300 damage to monsters). The charge stops after knocking an enemy champion into the air. |
| W | Flail of the Northern Winds | 350.0 | 40 / 40 / 40 / 40 / 40 Mana | 11 / 10 / 9 / 8 / 7 | Sejuani's next basic attack deals 40/60/80/100/120 (+) bonus magic damage to the target and enemies near it. She then swings her flail, dealing 80/120/160/200/240 (+ [10/10/10/10/10% bonus HP]) (+0.6) magic damage to nearby enemies over 4 seconds.
If this ability is reactivated, Sejuani immediately starts swinging her flail. |
| E | Permafrost | | 55 / 55 / 55 / 55 / 55 Mana | 11 / 11 / 11 / 11 / 11 | Passive: Abilities and basic attacks apply Frost to enemies for 4 seconds.
Active: All nearby enemies with Frost take 60/110/160/210/260 (+0.5) magic damage and are slowed by 50/55/60/65/70% for 1.5/1.75/2/2.25/2.5 seconds. |
| R | Glacial Prison | 1175.0 | 100 / 100 / 100 Mana | 130 / 115 / 100 | Sejuani throws her True Ice bola in a line. If the bola hits an enemy champion, it shatters, stunning the target and nearby enemies for 1.25/1.5/1.75 seconds. If the bola reaches its maximum range, it shatters and slows enemies by 90/90/90% for 1.25/1.5/1.75 seconds instead.
All enemies in the shatter area take 150/250/350 (+0.8) magic damage. |