League of Legends - Champions and Skills
Kayn (The Shadow Reaper)

A peerless practitioner of lethal shadow magic, Shieda Kayn battles to achieve his true destiny—to one day lead the Order of Shadow into a new era of Ionian supremacy. He wields the sentient darkin weapon Rhaast, undeterred by its creeping corruption of...

Spells
Reaping Slash

Kayn dashes, then slashes. Both deal damage.

Blade's Reach

Kayn damages and slows targets in a line.

Shadow Step

Kayn can walk through terrain.

Umbral Trespass (ULT)

Kayn hides in an enemy's body, dealing massive damage when he bursts out.

Passive
The Darkin Scythe

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.