Appa, Steadfast Guardian + Helm of Awakening + Wispweaver Angel + Thornscape Familiar

Appa, Steadfast Guardian

Helm of Awakening

Wispweaver Angel

Thornscape Familiar

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 infinite token loop relies on cost-reduction effects to break Wispweaver Angel's mana value entirely in half. With Helm of Awakening and Thornscape Familiar both active on the board, the {2} re-cast cost imposed by Appa, Steadfast Guardian is reduced to zero, allowing Wispweaver Angel to be cast for free straight from exile. Every time Wispweaver Angel re-enters the battlefield, its blink trigger resets Appa, Steadfast Guardian so it can exile the Angel once more, feeding an endless cycle that triggers Appa's second ability to churn out an infinite army of 1/1 white Ally creature tokens.