Gravecrawler, Rooftop Storm, and Nantuko Husk

Prerequisites

• Gravecrawler on the battlefield
• Rooftop Storm on the battlefield
• Nantuko Husk on the battlefield

Steps

1. Activate Nantuko Husk's ability by sacrificing Gravecrawler, Nantuko gets +2/+2 until end of turn
2. Cast Gravecrawler from your graveyard by paying
3. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinitely large Nantuko Husk
• Infinite sacrifice triggers
• Infinite storm count