Appa, Loyal Sky Bison

Avatar: The Last Airbender · #9 · Uncommon

Legendary Creature — Bison Ally

Flying Whenever Appa enters or attacks, choose one — • Target creature you control gains flying until end of turn. • Airbend another target nonland permanent you control. (Exile it. While it's exiled, its owner may cast it for {2} rather than its mana cost.)