When Chthonian Nightmare enters the battlefield, you get EEE.
Pay X E, Sacrifice a creature, Return Cthonian Nightmare to its owner's hand: Return target creature card with mana value X from your graveyard to the battlefield. Activate only as a sorcery.
![Chthonian Nightmare (Borderless) [Modern Horizons 3]](http://paradoxtcg.com/cdn/shop/files/ee12209f-e89a-5f02-a0e0-fff2f6af4fa0.png?v=1723047839&width=1445)
