Resurrected Cultist 115/286 (Duskmourn: House of Horror)

Delirium — {2}{B}{B}: Return this card from your graveyard to the battlefield with a finality counter on it. Activate only if there are four or more card types among cards in your graveyard and only as a sorcery. (If a creature with a finality counter on it would die, exile it instead.)