Gravecrawler, Edgewalker, Maskwood Nexus, and Ashnod's Altar

Prerequisites

• Gravecrawler on the battlefield
• Edgewalker on the battlefield
• Maskwood Nexus on the battlefield
• Ashnod's Altar on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Gravecrawler, adding
2. Cast Gravecrawler from your graveyard for
3. Repeat

Results

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