Appa, Steadfast Guardian (TLA) #316 [EN/N]

{2}{W}{W} · Legendary Creature — Bison Ally · 3/4 · Flash Flying When Appa enters, airbend any number of other target nonland permanents you control. (Exile them. While each one is exiled, its owner may cast it for {2} rather than its mana cost.) Whenever you cast a spell from exile, create a 1/1 white Ally creature token. · Illustrated by Ilse Gort · Avatar: The Last Airbender #316 · EDHREC rank 3337 · Magic: The Gathering, MTG