Countryside Crusher is a rare Creature — Giant Warrior card from Morningtide (MOR), collector number 89. Current market price: $0.70 (foil $4.69), TCGplayer market prices via Scryfall.
At the beginning of your upkeep, reveal the top card of your library. If it's a land card, put it into your graveyard and repeat this process. Whenever a land card is put into your graveyard from anywhere, put a +1/+1 counter on this creature.