Abilities:

Omen of War: Yorick’s next attack will deal bonus physical damage and summon a Spectral Ghoul that deals additional damage and moves faster than Yorick’s other ghouls. While the Spectral Ghoul is alive, Yorick moves faster as well.

Omen of Pestilence: Yorick summons a Decaying Ghoul that arrives with a violent explosion, dealing damage and slowing nearby enemies. While the Decaying Ghoul remains alive, nearby enemies continue to be slowed.

Omen of Famine: Yorick steals life from his target and summons a Ravenous Ghoul that heals Yorick for the damage it deals.

Omen of Death (Ultimate): Yorick conjures a revenant in the image of one of his allies. If his ally dies while its revenant is alive, the revenant sacrifices itself to reanimate them and give them time to enact vengeance.

Unholy Covenant (Passive): Yorick’s attacks deal more damage for each summon that is active. Meanwhile, Yorick’s ghouls deal some percent of Yorick’s Attack Damage and have some percent of his total health.