Bumi, Eclectic Earthbender is a rare Legendary Creature — Human Noble Ally card from Avatar: The Last Airbender Eternal (TLE), collector number 248. Current market price: $8.40 (foil $8.30), TCGplayer market prices via Scryfall.
When Bumi enters, earthbend 1. (Target land you control becomes a 0/0 creature with haste that's still a land. Put a +1/+1 counter on it. When it dies or is exiled, return it to the battlefield tapped.) Whenever Bumi attacks, put two +1/+1 counters on each land creature you control.