Perigee Beckoner, Metamorphosis Fanatic, and Hammerhead, Maggia Boss

Prerequisites

• Perigee Beckoner in hand
• Metamorphosis Fanatic on the battlefield
• Hammerhead, Maggia Boss on the battlefield
• available

Steps

1. Cast Perigee Beckoner for its warp cost by paying
2. When Perigee Beckoner enters, it triggers, targeting Metamorphosis Fanatic
3. Activate Hammerhead by sacrificing Perigee Beckoner
4. Activate Hammerhead 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 Hammerhead ability from step 4
9. Repeat from step 3

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers