Mortuary, Bolas's Citadel, Viscera Seer, and Dross Harvester

Prerequisites

• Mortuary on the battlefield
• Bolas's Citadel on the battlefield
• Viscera Seer on the battlefield
• Dross Harvester on the battlefield

Steps

1. Activate Viscera Seer by sacrificing it
2. When Viscera Seer dies, Mortuary and Dross Harvester trigger
3. Resolve the Mortuary trigger, putting Viscera Seer from your graveyard onto the top of your library
4. Resolve the Dross Harvester trigger, causing you to gain 2 life
5. Resolve the Viscera Seer ability
6. Cast Viscera Seer from the top of your library by paying 1 life
7. Repeat

Results

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