Appa, the Vigilant (TLE 62)

Legendary Creature — Bison Ally • Mana cost: {5}{W}{W} • Avatar: The Last Airbender Eternal • Rare

Flying, vigilance
Whenever Appa or another Ally you control enters, creatures you control get +1/+1 and gain flying and vigilance until end of turn.

Illustrated by Fahmi Fauzi.