Mortuary, Grinding Station, Shield Sphere, and Gwenom, Remorseless

Prerequisites

• Mortuary on the battlefield
• Grinding Station on the battlefield
• Shield Sphere on the battlefield
• Gwenom, Remorseless on the battlefield

Steps

1. Activate Grinding Station by tapping it and sacrificing Shield Sphere When Shield Sphere dies, Mortuary triggers, putting Shield Sphere from your graveyard onto the top of your library
2. Resolve the Grinding Station ability
3. Cast Shield Sphere from the top of your library by paying 0 life
4. When Shield Sphere enters, Grinding Station triggers, untapping Grinding Station
5. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite mill
• Infinite self-mill
• Infinite storm count