Glorious Mug of the Grandmaster

Description
The Glorious Mug of the Grandmaster, otherwise referred to as the Mug of Immortals, is a large cup seemingly made of normal glass. It is said to be used by Grandmaster Marsh to consume highly potent liquids that allow the Grandmaster to regenerate his deconstructive energies and greatly extend the duration of his life.

Legend describes the Mug of Immortals to have previously been owned by the Norse deity, Odin himself. How it came to fall under the possession of Grandmaster Marsh remains a mystery to this day.