Akul the Unrepentant is a rare Legendary Creature — Scorpion Dragon Rogue card from Outlaws of Thunder Junction Promos (POTJ), collector number 189p. Current market price: $0.64 (foil $0.49), TCGplayer market prices via Scryfall.
Flying, trample Sacrifice three other creatures: You may put a creature card from your hand onto the battlefield. Activate only as a sorcery and only once each turn.