Heart-Piercer Manticore is a common Token Creature — Zombie Manticore card from Amonkhet Tokens (TAKH), collector number 6. Current market price: $0.24, TCGplayer market prices via Scryfall.
When Heart-Piercer Manticore enters the battlefield, you may sacrifice another creature. When you do, Heart-Piercer Manticore deals damage equal to that creature's power to any target.