Appa, Aang's Companion is a rare Legendary Creature — Bison Ally card from Media and Collaboration Promos (PMEI), collector number 2026-8. Current market price: — (foil $0.27), TCGplayer market prices via Scryfall.
Flying (This creature can't be blocked except by creatures with flying or reach.) Whenever Appa attacks, another target attacking creature without flying gains flying until end of turn.