Appa, Steadfast Guardian + Temur Battlecrier + Aang, Airbending Master

Appa, Steadfast Guardian

Temur Battlecrier

Aang, Airbending Master

How it works

1. Cast Appa by paying .
2. When Appa enters, it triggers, airbending Aang.
3. Cast Aang from exile by paying 0.
4. Appa triggers, creating a 1/1 Ally creature token.
5. When Aang enters, it triggers, airbending Appa.
6. Cast Appa from exile by paying 0.
7. Repeat from step 2.

This infinite loop hinges on the continuous re-entry of Appa, Steadfast Guardian and Aang, Airbending Master, whose airbending triggers repeatedly exile and recast one another. Temur Battlecrier makes this a reality by reducing the cost of casting spells from exile to zero, while Appa, Steadfast Guardian's second ability simultaneously generates an endless army of 1/1 white Ally creature tokens whenever you cast those spells from exile.