Unlucky Witness, Mortuary, and Thermopod

Prerequisites

• Unlucky Witness on the battlefield
• Mortuary on the battlefield
• Thermopod on the battlefield

Steps

1. Activate Thermopod's second ability by sacrificing Unlucky Witness, adding
2. Unlucky Witness dies, triggering itself and Mortuary
3. Resolve the Mortuary trigger, putting Unlucky Witness on top of your library
4. Resolve the Unlucky Witness trigger, exiling the top two cards of your library
5. Cast Unlucky Witness from exile by paying
6. Repeat

Results

• Exile your library
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers