Mortuary, Vivien, Monsters' Advocate, and Endless One

Prerequisites

• Mortuary on the battlefield
• Vivien, Monsters' Advocate on the battlefield
• Endless One in hand or in the library

Steps

1. Cast Endless One either from your hand or from the top of your library by paying
2. Endless One enters the battlefield and dies as a state-based action due to having zero toughness
3. Mortuary triggers, putting Endless One on top of your library from your graveyard
4. Repeat

Results

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