Summoning Station, Encroaching Mycosynth, and Ashnod's Altar

Prerequisites

• Summoning Station on the battlefield
• Encroaching Mycosynth on the battlefield
• Ashnod's Altar on the battlefield

Steps

1. Activate Summoning Station by tapping it, creating a 2/2 Pincher creature token
2. Activate Ashnod's Altar by sacrificing the Pincher, adding
3. The Pincher dies, triggering Summoning Station, untapping itself
4. Repeat

Results

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