Rhys, the Evermore, Reveillark, Solemnity, and Umbral Collar Zealot

Prerequisites

• Rhys, the Evermore in hand
• Reveillark on the battlefield
• Solemnity on the battlefield
• Umbral Collar Zealot on the battlefield
• available

Steps

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

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite surveil