Omen of Death
Yorick conjures a revenant in the image of one of his allies that will have 50 / 75 / 100% of their max health and 45 / 60 / 75% of their attack damage, which lasts up to 10 seconds. If his ally dies while its revenant is alive, the revenant sacrifices itself to reanimate them temporarily by restoring them to full health and give them time to enact vengeance. The reanimation will last for up to 10 seconds. During this time, the ally can use all of his abilities.