Corpseberry Cultivator is a common Creature — Squirrel Warlock card from Bloomburrow (BLB), collector number 210. Current market price: $0.16 (foil $0.26), TCGplayer market prices via Scryfall.
At the beginning of combat on your turn, you may forage. (Exile three cards from your graveyard or sacrifice a Food.) Whenever you forage, put a +1/+1 counter on this creature.