Millennium Emerald

The Millennium Emerald is an object that appears in the Sonic the Hedgehog series. It is a Green emerald and a mystical relic of immeasurable power from the forgotten past. Created by a True God, the Millennium Emerald acts as a Legendary Treasure. The one who controls the Millennium Emerald can control a the Massive Nation like the Galactic Eggman Empire, making the Millennium Emerald a very valuable gem.

Abilities
Its main power grants the owner the powers and knowledge of darkness, giving him incredible skill at strategy and allowing him to use ancient and powerful magic. That magic is mainly used to control Duel Monsters. The Millennium Emerald is the strongest and most powerful of all the Legendary Treasures i the Galaxy. In addition to holding the soul of the Black Rose King.

Users

 * Toshiya Gekko