Mortuary, Bolas's Citadel, Fanatical Firebrand, and Cruel Celebrant

Prerequisites

• Mortuary on the battlefield
• Bolas's Citadel on the battlefield
• Fanatical Firebrand on the battlefield
• Cruel Celebrant on the battlefield

Steps

1. Activate Fanatical Firebrand by tapping and sacrificing it
2. When Fanatical Firebrand dies, Mortuary and Cruel Celebrant trigger
3. Resolve the Mortuary trigger, putting Fanatical Firebrand from your graveyard onto the top of your library
4. Resolve the Cruel Celebrant trigger, causing you to gain 1 life and each opponent to lose 1 life
5. Resolve the Fanatical Firebrand ability
6. Cast Fanatical Firebrand 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
• Infinite lifeloss