Rhys, the Evermore + Reveillark + Solemnity + Thermopod

Rhys, the Evermore

Reveillark

Solemnity

Thermopod

How it works

1. Cast Rhys by paying 1
2. When Rhys enters, it triggers, giving Reveillark persist until end of turn.
3. Activate Thermopod by sacrificing Rhys.
4. Activate Thermopod by sacrificing Reveillark.
5. When Reveillark dies, its ability and its persist ability trigger.
6. Resolve the persist trigger, returning Reveillark from your graveyard to the battlefield without a -1/-1 counter on it due to Solemnity.
7. Resolve the second trigger, returning Rhys from your graveyard to the battlefield.
8. When Rhys enters, it triggers, giving Reveillark persist until end of turn.
9. Repeat from step 3.