Junji, the Midnight Sky + Phyrexian Altar + Relic Vial + Karmic Guide

Junji, the Midnight Sky

Phyrexian Altar

Relic Vial

Karmic Guide

How it works

1. Activate Phyrexian Altar by sacrificing Karmic Guide.
2. When Karmic Guide dies, Relic Vial triggers, causing you to gain 1 life and each opponent to lose 1 life.
3. Activate Phyrexian Altar by sacrificing Junji.
4. When Junji dies, it and Relic Vial trigger.
5. Resolve the Relic Vial trigger, causing you to gain 1 life and each opponent to lose 1 life.
6. Resolve the Junji trigger, returning Karmic Guide from your graveyard to the battlefield and causing you to lose 2 life.
7. When Karmic Guide enters, it triggers, returning Junji from your graveyard to the battlefield.
8. Repeat.