Gravecrawler, Rooftop Storm, and Altar of Dementia

Prerequisites

• Gravecrawler on the battlefield
• Rooftop Storm on the battlefield
• Altar of Dementia on the battlefield
• You control at least one additional Zombie

Steps

1. Activate Altar of Dementia by sacrificing Gravecrawler, causing target player to mill two cards
2. Cast Gravecrawler from your graveyard by paying
3. Repeat

Results

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