Junji, the Midnight Sky, Umbral Collar Zealot, Vengeful Bloodwitch, and Karmic Guide

Prerequisites

• Junji, the Midnight Sky on the battlefield
• Umbral Collar Zealot on the battlefield
• Vengeful Bloodwitch on the battlefield
• Karmic Guide on the battlefield

Steps

1. Activate Umbral Collar Zealot by sacrificing Karmic Guide
2. When Karmic Guide dies, Vengeful Bloodwitch triggers, causing you to gain 1 life and target 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 Vengeful Bloodwitch trigger
6. Resolve the Vengeful Bloodwitch trigger, causing you to gain 1 life and target opponent to lose 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 LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite lifeloss
• Infinite surveil 1