Mortuary, Aetherflux Reservoir, Shilgengar, Sire of Famine, and Bolas's Citadel

Prerequisites

• Mortuary on the battlefield
• Aetherflux Reservoir on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Bolas's Citadel on the battlefield

Steps

1. Activate Shilgengar by sacrificing a creature with mana value 1 or less
2. When the creature dies, Mortuary triggers, putting the creature from your graveyard onto the top of your library
3. Resolve the Shilgengar ability
4. Cast the creature from the top of your library by paying X life, where X is the creature's mana value
5. Aetherflux Reservoir triggers, causing you to gain 1 life for each spell you've cast this turn
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite lifegain triggers
• Infinite lifegain
• Infinite storm count
• Infinite Blood tokens
• Infinite damage