The Tiara of Abyss (Earth-1)

The Tiara of Abyss was a source of near unlimited power even more powerful than the Pandorica, it was created in the heart of a dying universe by the Abyss, a group of mysterious entities, but they lost it and was lost in the Timestream till it arrived in the hands of a individual called Nemesis and he nearly destroyed Earth Prime but he was destroyed by the combined force of the Entities, The Original Keepers, and the Council of Magic. His opponents then shattered took the shards of power from his crown and then destroyed it. However Nemesis was able to create a astral spirit of his self and float through out time till he came across a worthy person and inhabited their body, he then traveled the Multiverse using his already considerable power to build up a legion to come back to Earth Prime to reforge his weapon of power and gather the shards.