Sister Hospitaller, Blasting Station, and Fiend Hunter

Prerequisites

• Sister Hospitaller in hand
• Blasting Station on the battlefield
• Fiend Hunter in the graveyard
• available

Steps

1. Cast Sister Hospitaller by paying
2. When Sister Hospitaller enters, it and Blasting Station trigger
3. Resolve the Blasting Station trigger, untapping it
4. Resolve the Sister Hospitaller trigger, returning Fiend Hunter from your graveyard to the battlefield and causing you to gain life equal to its mana value
5. When Fiend Hunter enters, it and Blasting Station trigger
6. Resolve the Blasting Station trigger, untapping it
7. Resolve the Fiend Hunter trigger, exiling Sister Hospitaller
8. Activate Blasting Station by tapping it and sacrificing Fiend Hunter
9. When Fiend Hunter dies, it triggers, returning Sister Hospitaller from exile to the battlefield
10. Repeat from step 2
11. Resolve all Blasting Station abilities

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite damage
• Infinite lifegain triggers
• Infinite lifegain