Junji, the Midnight Sky, Umbral Collar Zealot, Cruel Celebrant, and Metamorphosis Fanatic

Prerequisites

• Junji, the Midnight Sky on the battlefield
• Umbral Collar Zealot on the battlefield
• Cruel Celebrant on the battlefield
• Metamorphosis Fanatic on the battlefield

Steps

1. Activate Umbral Collar Zealot by sacrificing Metamorphosis Fanatic
2. When Metamorphosis Fanatic dies, Cruel Celebrant triggers, causing you to gain 1 life and each opponent to lose 1 life
3. Resolve the Umbral Collar Zealot ability
4. Activate Umbral Collar Zealot by sacrificing Junji
5. When Junji dies, it and Cruel Celebrant trigger
6. Resolve the Cruel Celebrant trigger, causing you to gain 1 life and each opponent to lose 1 life
7. Resolve the Junji trigger, returning Metamorphosis Fanatic from your graveyard to the battlefield and causing you to lose 2 life
8. When Metamorphosis Fanatic enters, it triggers, returning Junji from your graveyard to the battlefield
9. Resolve the Umbral Collar Zealot ability
10. Repeat

Results

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