Colossal Plow is a uncommon Artifact — Vehicle card from Kaldheim (KHM), collector number 236. Current market price: $0.32 (foil $0.35), TCGplayer market prices via Scryfall.
Whenever this Vehicle attacks, add {W}{W}{W} and you gain 3 life. Until end of turn, you don't lose this mana as steps and phases end. Crew 6 (Tap any number of creatures you control with total power 6 or more: This Vehicle becomes an artifact creature until end of turn.)