Appa, Steadfast Guardian + Wispweaver Angel + Centaur Omenreader

Appa, Steadfast Guardian

Wispweaver Angel

Centaur Omenreader

How it works

1. Cast Appa by paying
2. When Appa enters, its first ability triggers, exiling Wispweaver Angel with the ability to cast it later from exile.
3. Cast Wispweaver Angel from exile by paying 0.
4. Appa's second ability triggers, creating a 1/1 Ally creature token.
5. When Wispweaver Angel enters, it triggers, blinking Appa.
6. Repeat from step 2.

This elegant loop turns Appa, Steadfast Guardian into an engine of endless iteration, fueled by the cost-reduction magic of Centaur Omenreader. When Wispweaver Angel enters the battlefield, its blink ability resets Appa, Steadfast Guardian, which in turn exiles Wispweaver Angel with an airbend discount that drops its cost to zero. Thanks to Centaur Omenreader's static ability keeping creature spells cheap while tapped, you can freely recast Wispweaver Angel from exile over and over again. Every single iteration of casting Wispweaver Angel from exile triggers Appa, Steadfast Guardian's second ability to flood the board with an infinite army of 1/1 white Ally creature tokens.