Gravecrawler + Nim Shambler + Rooftop Storm

UB identity

Commander legal

The 3 combo pieces

• Gravecrawler
• Nim Shambler
• Rooftop Storm

How to execute it

1. Activate Nim Shambler's ability by sacrificing Gravecrawler, regenerate Nim Shambler.
2. Cast Gravecrawler from your graveyard by paying {0}.
3. Repeat.

What the combo produces

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