Junji, the Midnight Sky, Sister Hospitaller, and Ashnod's Altar

Prerequisites

• Junji, the Midnight Sky on the battlefield
• Sister Hospitaller on the battlefield
• Ashnod's Altar on the battlefield
• Your life total is at least three

Steps

1. Activate Ashnod's Altar by sacrificing Sister Hospitaller, adding
2. Activate Ashnod's Altar by sacrificing Junji, adding
3. When Junji dies, it triggers, returning Sister Hospitaller from your graveyard to the battlefield
4. When Sister Hospitaller enters the battlefield, it triggers, returning Junji from your graveyard to the battlefield, and causing you to gain five life
5. Repeat

Results

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