Realm-Scorcher Hellkite is a mythic Creature — Dragon card from Wilds of Eldraine Promos (PWOE), collector number 145p. Current market price: $0.67 (foil $0.68), TCGplayer market prices via Scryfall.
Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.) Flying, haste When this creature enters, if it was bargained, add four mana in any combination of colors. {1}{R}: This creature deals 1 damage to any target.