Uchbenbak, the Great Mistake

The Lost Caverns of Ixalan · #310 · Uncommon

Legendary Creature — Skeleton Horror

Vigilance, menace Descend 8 — {4}{U}{B}: Return this card from your graveyard to the battlefield with a finality counter on it. Activate only if there are eight or more permanent cards in your graveyard and only as a sorcery. (If a creature with a finality counter on it would die, exile it instead.)