Kaya's Ghostform, Brotherhood Outcast, and Hammerhead, Maggia Boss

Prerequisites

• Kaya's Ghostform on the battlefield
• Brotherhood Outcast on the battlefield
• Hammerhead, Maggia Boss on the battlefield

Steps

1. Activate Hammerhead by sacrificing Brotherhood Outcast
2. When Brotherhood Outcast dies, Kaya's Ghostform triggers, returning Brotherhood Outcast from your graveyard to the battlefield
3. When Brotherhood Outcast enters, it triggers, returning Kaya's Ghostform from your graveyard to the battlefield attached to Brotherhood Outcast Resolve the Hammerhead ability
4. Repeat
5. Activate Hammerhead by sacrificing Brotherhood Outcast
6. When Brotherhood Outcast dies, Kaya's Ghostform triggers, returning Brotherhood Outcast from your graveyard to the battlefield
7. When Brotherhood Outcast enters the battlefield, it triggers, returning Kaya's Ghostform from your graveyard to the battlefield attached to Brotherhood Outcast
8. Resolve the Hammerhead ability
9. Repeat

Results

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