Walking Sarcophagus is a common Artifact Creature — Zombie Cat card from Aetherdrift (DFT), collector number 246. Current market price: $0.13 (foil $0.17), TCGplayer market prices via Scryfall.
Start your engines! (If you have no speed, it starts at 1. It increases once on each of your turns when an opponent loses life. Max speed is 4.) Max speed — This creature gets +1/+2.