Appa, Steadfast Guardian + Will, Scion of Peace + Wispweaver Angel

Appa, Steadfast Guardian

Will, Scion of Peace

Wispweaver Angel

How it works

1. Activate Will by tapping it, causing white and blue spells you cast to cost 1 less for each life you've gained this turn.
2. Cast Appa by paying
3. When Appa enters, its first ability triggers, exiling Wispweaver Angel with the ability to cast it later from exile.
4. Cast Wispweaver Angel from exile by paying 0.
5. Appa's second ability triggers, creating a 1/1 Ally creature token.
6. When Wispweaver Angel enters, it triggers, blinking Appa.
7. Repeat from step 3.