Bolas's Citadel, Mortuary, and Endless One

Prerequisites

• Bolas's Citadel on the battlefield
• Mortuary 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 dies as a state-based action due to having zero or less toughness
3. Mortuary triggers, putting Endless One from your graveyard on top of your library
4. Repeat

Results

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