Avalanche Caller is a uncommon Snow Creature — Human Wizard card from Kaldheim (KHM), collector number 45. Current market price: $0.26 (foil $0.19), TCGplayer market prices via Scryfall.
{2}: Target snow land you control becomes a 4/4 Elemental creature with hexproof and haste until end of turn. It's still a land. (A creature with hexproof can't be the target of spells or abilities your opponents control.)