Kennen's abilities add Marks of the Storm to opponents which last for 8 seconds. An opponent is stunned for 1 second upon receiving 3 Marks of the Storm, and Kennen receives 25 energy. If the stun is applied more than once within 7 seconds, it has a diminished effect so it will only stun for approximately 0.5 seconds.
Active: For 3 seconds Kennen gains 310 movement speed, ignores unit collisions, damages all enemies touched, applying a Mark of the Storm to each enemy and restoring 40 energy from the first enemy he hits. Lightning Rush deals half damage to minions and Kennen cannot use basic attacks while Lightning Rush is active.
Additionally, for 4 seconds Kennen's armor and magic resistance are increased. While Lightning Rush is active, Kennen can activate it again to cancel the first part of the ability.
Active: Kennen summons a magical storm that damages a random enemy champion within range every fraction of a second. The storm hits several times, increasing with level, and cannot hit the same target more than 3 times. A Mark of the Storm is applied to enemies each time they are hit.
Magic damage per bolt： 80 / 145 / 210 (+ 40% AP)
Maximum single target damage： 240 / 435 / 630 (+ 120% AP)