The Die of Power was originally the Anti-Backwards Crystal. Dwight painted numbers on it, turning it into a D12; allowing Dwight and Cubert to play Dungeons & Dragons. This die was what caused the Planet Express Crew to get sucked into Cornwood in the first place. It was destroyed by Professor Farnsworth and Igner.
When rolled, the Die of Power has one of twelve different effects.
- 3: Grow
- 7: Banish
- 12: Mirror Mania