The Klepsydra

This is a powerful artefact, and the reason why such a minor House has not been absorbed by larger, more aggressive Houses.
Little is known about the actual nature of the device, and the device itself is guarded by the fiercest warrior chaos lords of this House.
In a preamble to his work on The Calculus of Change, the gifted natural philosopher, Karthraxis, claimed that the artefact could alter the friction between moments.