Morophon, the Boundless, Fist of Suns, Ebondeath, Dracolich, and Yahenni, Undying Partisan

Prerequisites

• Morophon, the Boundless on the battlefield
• Fist of Suns on the battlefield
• Ebondeath, Dracolich in the graveyard
• Yahenni, Undying Partisan on the battlefield
• A creature not named Ebondeath, Dracolich died this turn
• "Zombie" chosen with Morophon

Steps

1. Cast Ebondeath from your graveyard by paying
2. Activate Yahenni by sacrificing Ebondeath, giving it indestructible until end of turn
3. Repeat

Results

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