Mortuary, Blood Pet, Panicked Bystander // Cackling Culprit, and Gwenom, Remorseless

Prerequisites

• Mortuary on the battlefield
• Blood Pet on the battlefield
• Panicked Bystander // Cackling Culprit on the battlefield
• Gwenom, Remorseless on the battlefield

Steps

1. Activate Blood Pet by sacrificing it
2. When Blood Pet dies, Mortuary and Panicked Bystander // Cackling Culprit trigger
3. Resolve the Mortuary trigger, putting Blood Pet from your graveyard onto the top of your library
4. Resolve the Panicked Bystander // Cackling Culprit trigger, causing you to gain 1 life Cast Blood Pet from the top of your library by paying 1 life
5. Repeat

Results

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