Perigee Beckoner, Shilgengar, Sire of Famine, and Metamorphosis Fanatic

Prerequisites

• Perigee Beckoner in hand
• Shilgengar, Sire of Famine 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 Shilgengar by sacrificing Perigee Beckoner
4. Activate Shilgengar 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 Shilgengar ability from step 4
9. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite Blood tokens