Appa, Steadfast Guardian + Restoration Angel + The Wind Crystal + Stormscape Familiar

Appa, Steadfast Guardian

Restoration Angel

The Wind Crystal

Stormscape Familiar

How it works

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

This loop takes flight by leveraging Appa, Steadfast Guardian to tuck away Restoration Angel into exile upon entering the battlefield. Once exiled, the Angel can be recast for free because of Appa's airbending discount, and as that spell resolves from exile, Appa's second ability triggers to spawn a 1/1 white Ally token. When the recasted Restoration Angel re-enters the battlefield, its own ability triggers to blink Appa, resetting the entire sequence to keep the loop going. Meanwhile, cost reducers like The Wind Crystal and Stormscape Familiar ensure the mana math flows smoothly behind the scenes, making this an engine capable of generating infinite creature entry triggers, departures, tokens, and storm count.