Bolas's Citadel, Mortuary, and Stonecoil Serpent

Prerequisites

• Bolas's Citadel on the battlefield
• Mortuary on the battlefield
• Stonecoil Serpent in hand or in the library

Steps

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

Results

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