Mortuary, Ornithopter, Bolas's Citadel, and Yahenni, Undying Partisan

Prerequisites

• Mortuary on the battlefield
• Ornithopter on the battlefield
• Bolas's Citadel on the battlefield
• Yahenni, Undying Partisan on the battlefield

Steps

1. Activate Yahenni by sacrificing Ornithopter When Ornithopter dies, Mortuary triggers, putting Ornithopter from your graveyard onto the top of your library
2. Resolve the Yahenni ability
3. Cast Ornithopter from the top of your library by paying 0 life
4. Repeat

Results

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