Legendary Time Crystal
In the Collapsed Cosmos, a Legendary Time Crystal, apparently being some sort of magical counterpart to a conventional quantum time-crystal, was held by a billionaire in a vault under her mansion.
Jenny Everywhere and Laura Drake both believed that it could be used to repair the damage done to reality, and restore the Multiverse. Jenny intended to bring back the Multiverse as it was, in all its chaotic glory, while Laura wished to take the opportunity to restructure it according to what she thought was best. With Laura reaching the Crystal first, they dueled over it, and ended up short-circuiting the reality around them (given the frayed nature of existence in the Collapsed Cosmos); when Jenny woke up, there was no trace of Laura or the Time Crystal anywhere. (PROSE: The Hermetic Garbage of Jenny Everywhere)