Vona, Butcher of Magan is a mythic Legendary Creature — Vampire Knight card from Ixalan Promos (PXLN), collector number 231s. Current market price: — (foil $7.97), TCGplayer market prices via Scryfall.
Vigilance, lifelink {T}, Pay 7 life: Destroy target nonland permanent. Activate only during your turn.