Kayn Ability (LoL): Shadow Step: Shadow Assassin

Kayn removes slows on himself, gains 40% bonus movement speed, is ghosted and can ignore terrain collision for 1.5 seconds. Immobilizing effects will interrupt Shadow Step.

Kayn heals himself by 90 / 100 / 110 / 120 / 130 (+0.45 per bonus attack damage) upon moving through terrain for the first time and, if he's not in combat with enemy champions, Shadow Step's duration is increased to 7 / 7.5 / 8 / 8.5 / 9 seconds.

If Kayn enters terrain at least once, Shadow Step will be improved for the remainder of its duration to grant 70% bonus movement speed and make Kayn immune to slows. The cooldown of this ability is also reduced to 10 seconds at all ranks.

Entering combat with a champion after the effect is enhanced reduces the remaining duration to 1.5 seconds.