Gravecrawler, Pitiless Plunderer, and Ashnod's Altar

Prerequisites

• Gravecrawler on the battlefield
• Pitiless Plunderer on the battlefield
• Ashnod's Altar on the battlefield
• You control an additional Zombie

Steps

1. Activate Ashnod's Altar by sacrificing Gravecrawler, adding
2. Gravecrawler dies, triggering Pitiless Plunderer, creating a Treasure token
3. Activate the Treasure token by tapping and sacrificing it, adding
4. Cast Gravecrawler from your graveyard by paying
5. Repeat

Results

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