Gravecrawler, and Phyrexian Altar

Prerequisites

• Gravecrawler on the battlefield
• Phyrexian Altar on the battlefield
• You control an additional Zombie

Steps

1. Activate Phyrexian Altar by sacrificing Gravecrawler, adding
2. Cast Gravecrawler from your graveyard by paying
3. Repeat

Results

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