Karmic Guide, Sister Hospitaller, and Thermopod

Prerequisites

• Karmic Guide in hand
• Sister Hospitaller in the graveyard
• Thermopod on the battlefield
• available

Steps

1. Cast Karmic Guide by paying
2. When Karmic Guide enters, it triggers, targeting Sister Hospitaller
3. Holding priority, activate Thermopod by sacrificing Karmic Guide
4. Resolve the Karmic Guide ability, returning Sister Hospitaller from your graveyard to the battlefield
5. When Sister Hospitaller enters, it triggers, targeting Karmic Guide
6. Holding priority, activate Thermopod by sacrificing Sister Hospitaller
7. Resolve the Sister Hospitaller ability, returning Karmic Guide from your graveyard to the battlefield and causing you to gain 5 life
8. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite lifegain triggers
• Infinite lifegain
• Infinite red mana