Mortuary, Bolas's Citadel, Carrion Feeder, and Bontu's Monument

Prerequisites

• Mortuary on the battlefield
• Bolas's Citadel on the battlefield
• Carrion Feeder on the battlefield
• Bontu's Monument on the battlefield
• Your life total is at least 2

Steps

1. Activate Carrion Feeder by sacrificing itself
2. When Carrion Feeder dies, Mortuary triggers, putting Carrion Feeder on top of your library from your graveyard
3. Resolve the Carrion Feeder ability, doing nothing
4. Cast Carrion Feeder from the top of your library by paying 1 life
5. Bontu's Monument triggers, causing you to gain 1 life and each opponent to lose 1 life
6. Repeat

Results

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