Mark of the Storm: Enemies hit by Kennen'sabilities receive a Mark of the Storm for 6 seconds, stacking up to 3 times. At three stacks, the marks consume themselves to stun the target for 1.25 seconds and restore 25 energy.
Diminished Mark: If the stun is applied more than once within 6 seconds, its duration is reduced to 0.5 seconds.
Kennen will still restore energy if the target dies from a third Mark of the Storm.
Active:Kennen transforms into a ball of electricity, disarming himself but becoming ghosted and gaining 100% total movement speed for 2 seconds, while also gaining bonus armor and bonus magic resistance while active.
10 / 20 / 30 / 40 / 50
Kennen deals magic damage to all enemies he passes through, doubled against champions and restores 40 energy the first time Lightning Rush damages an enemy.
42.5 / 62.5 / 82.5 / 102.5 / 122.5 (+ 40% AP)
85 / 125 / 165 / 205 / 245 (+ 80% AP)
Kennen gains bonus attack speed for 4 seconds upon existing Lightning Rush.
30 / 40 / 50 / 60 / 70%
Kennen can reactivate Lightning Rush to prematurely cancel it, allowing him to use basic attacks again.
Lightning Rush will only damage any particular enemy once per cast.
Lightning Rush can grant Kennen an effective 230 bonus movement speed (assuming there are no modifiers involved).
Reactivating Lightning Rush will not remove the bonus resistances since them and the bonus movement speed are independent of each other.