Mazzaroth

The Mazzaroth is a technologically advanced device which is capable of connecting lower-dimensional space with Space-Time Six. The applications of such a device are limitless, but there are a number of difficulties in building and activating one. To power a Mazzaroth requires energy roughly equivalent to the output of the star Sol. Also, in order to open a connection to Space-Time Six, a sentient being must be slain. Thus, the Mazzaroth takes the life of the one who activates it.

Primeverse/Alphaverse
The Zet of Primeverse and Alphaverse use the same Mazzaroth, built for the same purpose - to make visual contact with all points in space simultaneously. Unfortunately, they make the mistake of powering theirs with a sword possessed by a Space-Time Six native, causing a kaleidoscopic reality fracture.

Negaverse
The Negaverse Zet initially reject the Mazzaroth due to its prohibitive energy needs, until the machinations of the Sigmaverse Zet start merging the two Verses together. As aspects of Sigmaverse bleed into Negaverse, the Negaverse Zet gain access to magical powers, which permit them to power the Mazzaroth without resorting to a Zanhoshi. The impending collapse of Negaverse into Sigmaverse compels them to use their Mazzaroth to escape Negaverse entirely. This is how the Negaverse Zet make their way to Alphaverse.

Sigmaverse
In Sigmaverse, the Zet take advantage of the magical nature of their universe to easily and safely activate a Mazzaroth of their own. At first they use it for more noble purposes, but once the Zet discover Alphaverse and the Tachyon Wave, they become obsessed with manipulating the outcome of the Zanhoshi Reunion. To that end, they use the Mazzaroth to "bridge" the Tachyon Wave, and project their consciousnesses into Avatars in Alphaverse.

Nightmareverse
In Nightmareverse, the Mazzaroth is called the Eye of Prophecy. It appears on planet Valore out of nowhere in 4000BC, causing the invention of a cult-like religious order literally overnight, and delivers cryptic clues about the future to select individuals. These individuals form the founding and ruling council of the Honor Guard, guiding the people and their development through the Eye's prescient gifts.

Trivia

 * The Mazzaroth device is analogous to, and heavily inspired by, The Eye from The Dig.
 * Rumor has it that Mezzo owns a miniaturized Mazzaroth powered by a cat with a piece of buttered toast strapped to its back butter-side-up. There is definitely no such device, but if there were, it would definitely not be called "Mezzoroth".
 * Mazzaroth is the Hebrew word for "all the stars in the sky".