Mortuary, Bolas's Citadel, Viscera Seer, and Zulaport Cutthroat

Prerequisites

• Mortuary on the battlefield
• Bolas's Citadel on the battlefield
• Viscera Seer on the battlefield
• Zulaport Cutthroat on the battlefield

Steps

1. Activate Viscera Seer by sacrificing itself
2. When Viscera Seer dies, Mortuary and Zulaport Cutthroat trigger
3. Resolve the Mortuary trigger, putting Viscera Seer on top of your library from your graveyard
4. Resolve the Zulaport Cutthroat trigger, causing you to gain 1 life and each opponent to lose 1 life
5. Resolve the Viscera Seer ability, causing you to scry 1, ensuring to leave Viscera Seer on top of your library
6. Cast Viscera Seer from the top of your library by paying 1 life
7. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite lifegain triggers
• Infinite lifeloss
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count