Appa, Steadfast Guardian + Ballad of the Black Flag + Appa, Loyal Sky Bison

Appa, Steadfast Guardian

Ballad of the Black Flag

Appa, Loyal Sky Bison

How it works

1. Cast Appa, Steadfast Guardian by paying .
2. When Appa, Steadfast Guardian 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.

This brilliant loop turns the bison-and-guardian duo into a self-sustaining engine by abusing the special casting cost granted by Appa, Steadfast Guardian and Appa, Loyal Sky Bison's airbend abilities. Because the airbend mechanic lets you recast the exiled permanents for just {2}, and Ballad of the Black Flag's final chapter reduces the cost of historic spells by {2}, you can recast each bison and guardian for free. As they endlessly enter and leave the battlefield, Appa, Steadfast Guardian's triggered ability continuously rewards you with an infinite army of 1/1 white Ally creature tokens.