Zombie Musher is a common Snow Creature — Zombie card from Coldsnap (CSP), collector number 75. Current market price: $0.14 (foil $0.94), TCGplayer market prices via Scryfall.
Snow landwalk (This creature can't be blocked as long as defending player controls a snow land.) {S}: Regenerate this creature. ({S} can be paid with one mana from a snow source.)