Stingerback Terror is a rare Creature — Scorpion Dragon card from Outlaws of Thunder Junction Promos (POTJ), collector number 147p. Current market price: $0.40 (foil $0.38), TCGplayer market prices via Scryfall.
Flying, trample This creature gets -1/-1 for each card in your hand. Plot {2}{R} (You may pay {2}{R} and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)