Appa, Steadfast Guardian

Description

Appa, Steadfast Guardian (TLA-10 foil) is a legendary White creature — Bison Ally from the Avatar: The Last Airbender expansion. It has Flash and Flying and an enter-the-battlefield ability that exiles any number of your other nonland permanents allowing them to be cast from exile for {2}, and it creates a 1/1 Ally token whenever you cast a spell from exile. As a four-mana 3/4 legend with those effects, it can function as both a defensive surprise blocker and a toolbox engine enabling value from exiled permanents.