Bosco, Just a Bear (TLE-132) - Avatar: The Last Airbender: Eternal-Legal

When Bosco enters, create a Food token for each legendary creature you control. (It's an artifact with "2, T, Sacrifice this token: You gain 3 life.")

2G, Sacrifice a Food: Put two +1/+1 counters on Bosco. He gains trample until end of turn.