Mortuary, Krark-Clan Grunt, Phyrexian Walker, and Bolas's Citadel

Prerequisites

• Mortuary on the battlefield
• Krark-Clan Grunt on the battlefield
• Phyrexian Walker on the battlefield
• Bolas's Citadel on the battlefield

Steps

1. Activate Krark-Clan Grunt by sacrificing Phyrexian Walker When Phyrexian Walker dies, Mortuary triggers, putting Phyrexian Walker from your graveyard onto the top of your library
2. Resolve the Krark-Clan Grunt ability
3. Cast Phyrexian Walker 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
• Infinitely powerful Krark-Clan Grunt until end of turn