Crypt Ghast is a mythic Creature — Spirit card from Duskmourn: House of Horror Commander (DSC), collector number 368. Current market price: — (foil $16.98), TCGplayer market prices via Scryfall.
Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.) Whenever you tap a Swamp for mana, add an additional {B}.