Flailing Manticore is a rare Creature — Manticore card from Mercadian Masques (MMQ), collector number 187. Current market price: $0.45 (foil $15.00), TCGplayer market prices via Scryfall.
Flying, first strike {1}: This creature gets +1/+1 until end of turn. Any player may activate this ability. {1}: This creature gets -1/-1 until end of turn. Any player may activate this ability.