Gravecrawler, Rooftop Storm, and Viscera Seer

Prerequisites

• Gravecrawler on the battlefield
• Rooftop Storm on the battlefield
• Viscera Seer on the battlefield
• You control at least one additional Zombie

Steps

1. Activate Viscera Seer's ability by sacrificing Gravecrawler, scrying one
2. Cast Gravecrawler from your graveyard by paying
3. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite scry 1
• Infinite storm count