millennium_puzzle
One of the seven Millennium Items from Yu-Gi-Oh!, it contains the soul of the ancient Egyptian pharaoh Atem and a vast amount of ancient knowledge.
Appears as an inverted golden pyramid (geometry) when completed. It was completed by Muto_Yugi, who later gained his "other self" (Yami_Yugi i.e. the soul of Atem) in the process.
Aliases: none