Mortuary, Altar of Dementia, Tarpan, and Gwenom, Remorseless

Prerequisites

• Mortuary on the battlefield
• Altar of Dementia on the battlefield
• Tarpan in hand
• Gwenom, Remorseless on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing Tarpan
2. When Tarpan dies, it and Mortuary triggers
3. Resolve the Mortuary trigger, putting Tarpan from your graveyard onto the top of your library
4. Resolve the Tarpan trigger, causing you to gain 1 life Resolve the Altar of Dementia ability
5. Cast Tarpan from the top of your library by paying 1 life due to Gwenom
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite mill
• Infinite self-mill
• Infinite storm count
• Infinite lifegain triggers