Item that stabilizes reality and keeps Lil’lith alive. Feedback between it and the White Tower tore rifts in the fabric of reality/the Weave, and the extra stress added by the Door Jamb led to the Breaking.
Origin and Purpose: The Memento device, created in the Kingdom of Xerastus, was designed to preserve Queen Lil’lith of Lux, who suffers from Chronophasia, a temporal disease causing her to be erased from existence. At the time of S12, it stabilized reality and prevented this reality from opening up to others.
Creation and Flaws: Created by her father during her childhood, the device initially had the side effect of destroying adjacent realities. (This means The Queen is over 4000 years old.)
Repairs and Malfunction: Lux Gnomore repaired the device, but it is malfunctioning again due to disruptions in the weave caused by the White Tower, leading to the breakdown of reality. In S13, it was the main thing preventing reality from succumbing to the White Tower.