Flopsie, Bumi's Buddy is a uncommon Legendary Creature — Ape Goat card from Avatar: The Last Airbender (TLA), collector number 179. Current market price: $0.20 (foil $0.33), TCGplayer market prices via Scryfall.
When Flopsie enters, put a +1/+1 counter on each creature you control. Each creature you control with power 4 or greater can't be blocked by more than one creature.