Appa, Steadfast Guardian + Urza's Incubator + Appa, Loyal Sky Bison

Appa, Steadfast Guardian

Urza's Incubator

Appa, Loyal Sky Bison

How it works

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