Perigee Beckoner, Umbral Collar Zealot, and Metamorphosis Fanatic

Prerequisites

• Perigee Beckoner in hand
• Umbral Collar Zealot on the battlefield
• Metamorphosis Fanatic on the battlefield

Steps

1. Cast Perigee Beckoner for its warp cost by paying
2. When Perigee Beckoner enters, it triggers, targeting Metamorphosis Fanatic
3. Activate Umbral Collar Zealot by sacrificing Perigee Beckoner
4. Activate Umbral Collar Zealot by sacrificing Metamorphosis Fanatic
5. When Metamorphosis Fanatic dies, it triggers, returning itself from your graveyard to the battlefield tapped
6. When Metamorphosis Fanatic enters, it triggers, returning Perigee Beckoner from your graveyard to the battlefield
7. When Perigee Beckoner enters, it triggers, targeting Metamorphosis Fanatic
8. Resolve the Umbral Collar Zealot ability from step 4
9. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite surveil 1