A legendary device that opens the ways of Yggdrasil
Flickering with the red, blue, and green essences of the Tears of Selûne, this golden mechanism was fashioned by the Dwarves from draconic designs.
The Ethereal Plane is the planar spacetime that is Yggdrasil, or the Lattice of Heaven. It connects the Nine Worlds, and is jealously guarded by the gods. The Voltaic Key was constructed by the Dwarves, according to designs provided them by the Dragons (no one knows the origin of those designs, or the Dragons’ intent.)
It is powered by gem-like sources that are constructs of the gods and contain the very energies of their divinity.
The device allows access to Yggdrasil, and beyond.