Keurse, the Ogdoadic Light

Vigilance, Lifelink

When Keurse, the Ogdoadic Light enters, return target Ogdoadic creature card with mana value 2 or less from your graveyard to the battlefield with a finality counter on it.

{w}, Sacrifice a creature: Return Keurse, the Ogdoadic Light from your graveyard to the battlefield and an opponent may return a creature from their graveyard to
the battlefield, and if they do, it becomes a 1/1 Snake and loses all abilities. Activate only as a sorcery.