Bakersbane Duo is a common Creature — Squirrel Raccoon card from Bloomburrow (BLB), collector number 163. Current market price: $0.20 (foil $0.29), TCGplayer market prices via Scryfall.
When this creature enters, create a Food token. Whenever you expend 4, this creature gets +1/+1 until end of turn. (You expend 4 as you spend your fourth total mana to cast spells during a turn.)