Star of Zina

From Kuithne

Possibly the most powerful artifact ever invented, the Star of Zina was created by the Architect to manipulate the dimensional borders of this dimension. It introduced magic to the dimension.

It is currently in the possession of Jinae, who uses it to shield this dimension from extra-dimensional invasions and regulate the flow of magic. This power alone makes her the foremost among the genque who must all submit to her authority, as she not only controls their access to this dimension, but also their access to the essence.