Junji, the Midnight Sky, Umbral Collar Zealot, Karmic Guide, and Syr Vondam, Sunstar Exemplar

Prerequisites

• Junji, the Midnight Sky on the battlefield
• Umbral Collar Zealot on the battlefield
• Karmic Guide on the battlefield
• Syr Vondam, Sunstar Exemplar on the battlefield

Steps

1. Activate Umbral Collar Zealot by sacrificing Karmic Guide
2. When Karmic Guide dies, Syr Vondam triggers, putting a +1/+1 counter on it and causing you to gain 1 life
3. Resolve the Umbral Collar Zealot ability
4. Activate Umbral Collar Zealot by sacrificing Junji
5. When Junji dies, it and Syr Vondam trigger
6. Resolve the Syr Vondam trigger, putting a +1/+1 counter on it and causing you to gain 1 life
7. Resolve the Junji trigger, returning Karmic Guide from your graveyard to the battlefield and causing you to lose 2 life
8. When Karmic Guide enters, it triggers, returning Junji from your graveyard to the battlefield
9. Resolve the Umbral Collar Zealot ability
10. Repeat

Results

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