Sister Hospitaller, Ashnod's Altar, and Glorious Protector

Prerequisites

• Sister Hospitaller in hand
• Ashnod's Altar on the battlefield
• Glorious Protector in the graveyard
• available

Steps

1. Cast Sister Hospitaller by paying
2. When Sister Hospitaller enters, it triggers, returning Glorious Protector from your graveyard to the battlefield and causing you to gain life equal to its mana value
3. When Glorious Protector enters, it triggers, exiling Sister Hospitaller until Glorious Protector leaves the battlefield
4. Activate Ashnod's Altar by sacrificing Glorious Protector
5. When Glorious Protector leaves the battlefield, Sister Hospitaller is returned from exile to the battlefield
6. Repeat from step 2

Results

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