Mortuary, Bolas's Citadel, Viscera Seer, and Vindictive Vampire

Prerequisites

• Mortuary on the battlefield
• Bolas's Citadel on the battlefield
• Viscera Seer on the battlefield
• Vindictive Vampire on the battlefield

Steps

1. Activate Viscera Seer by sacrificing it
2. When Viscera Seer dies, Mortuary and Vindictive Vampire trigger
3. Resolve the Mortuary trigger, putting Viscera Seer from your graveyard onto the top of your library
4. Resolve the Vindictive Vampire trigger, causing you to gain 1 life and dealing 1 damage to each opponent
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 damage
• Infinite lifegain triggers
• Infinite storm count