Mortuary, Ashnod's Altar, Shield Sphere, and Bolas's Citadel

Prerequisites

• Mortuary on the battlefield
• Ashnod's Altar on the battlefield
• Shield Sphere on the battlefield
• Bolas's Citadel on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Shield Sphere When Shield Sphere dies, Mortuary triggers, putting Shield Sphere from your graveyard onto the top of your library
2. Cast Shield Sphere from the top of your library by paying 0 life
3. Repeat

Results

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