Summoning Station, Encroaching Mycosynth, and Altar of Dementia

Prerequisites

• Summoning Station on the battlefield
• Encroaching Mycosynth on the battlefield
• Altar of Dementia on the battlefield

Steps

1. Activate Summoning Station by tapping it, creating a 2/2 Pincher creature token
2. Activate Altar of Dementia by sacrificing the Pincher
3. The Pincher dies, triggering Summoning Station, untapping itself
4. Resolve the Altar of Dementia trigger, causing target player to mill cards equal to the Pincher's power
5. Repeat

Results

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