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 his body and mind. There are only two possible outcomes: either Kayn bends the weapon to his will... or the malevolent blade consumes him completely, paving the way for the destruction of all Runeterra.

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  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.

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  Reaping Slash

  Kayn dashes, then slashes. Both deal damage.

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  Blade's Reach

  Kayn damages and slows targets in a line.

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  Shadow Step

  Kayn can walk through terrain.

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  Umbral Trespass

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