Kayn wields an ancient weapon and fights Rhaast, the darkin within it, for control. Either the Darkin will triumph, or Kayn will master Rhaast and become the Shadow Assassin.

Darkin: Heal for a percentage of spell damage dealt to champions.

Shadow Assassin: For the first few seconds in combat with enemy champions, deal bonus damage.

Kayn dashes then spins his scythe, dealing physical damage to enemies he passes through, then deals the damage again to nearby enemies.

Darkin Slayer: Instead deal plus max Health physical damage.

Kayn swipes his scythe upward, dealing physical damage and Slowing enemies hit by %, decaying over 1.5 seconds.

Shadow Assassin: Kayn can move while using this Ability and increases its range.

Darkin Slayer: Additionally Knocks Up enemies hit for 1 second.

Kayn gains 40% Move Speed, becomes Ghosted, and can move through Terrain for 7 seconds. When he first enters terrain, he restores Health.

Being Immobilized and spending more than 1.5 consecutive seconds outside of Terrain ends this Ability early.

Shadow Assassin: Gain 70% Move Speed, Slow immunity, and reduce the Cooldown to seconds.

Passive: Champions damaged by Kayn are marked for 3.15 seconds.

Kayn infests a marked enemy, becoming Untargetable. After seconds or after Recasting, Kayn bursts out, dealing physical damage to the enemy.

Shadow Assassin: Increases this Ability's range, the distance Kayn exits, and refreshes The Darkin Scythe's Cooldown on exit.

Darkin Slayer: Instead deals max Health physical damage and restores Health (% damage amount).