Havengul Lich, Ashnod's Altar, and Phyrexian Walker

Prerequisites

• Havengul Lich on the battlefield
• Ashnod's Altar on the battlefield
• Phyrexian Walker on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Phyrexian Walker, adding
2. Activate Havengul Lich by paying , targeting Phyrexian Walker
3. Cast Phyrexian Walker from graveyard by paying
4. Repeat

Results

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