Craterhoof Behemoth is a mythic Creature — Beast card from Avacyn Restored (AVR), collector number 172. Current market price: $23.80 (foil $51.99), TCGplayer market prices via Scryfall.
Haste When this creature enters, creatures you control gain trample and get +X/+X until end of turn, where X is the number of creatures you control.