The scar of Uzhix

Eox fired their experimental planetary destroyer weapon on Daimar and Iovo (known as the twins. The weapon successfully shattered thet wins and it got turned into the asteroid belt now called The Disapora, but the weapon also completely destroyed Eox's atmopsphere and killed off much of its population. Eoxian used necromancy to survive, and today Eox is dominated by the undead and ruled by powerful Necrovites.

All dates here are noted in AG-years since the end of the Gap in the Pact Worlds system

In a single devastating instant, the Drift failed. Most starships in the Drift at the time seemed to vanish, with many stranded as the Drift’s physics warped and evolved around them. Other starships were ejected from the Drift, not just dumped into random places on the Material Plane but hurled into the Inner and Outer Planes, where Drift technology couldn’t facilitate their return. Travelers attempting to enter the Drift found it inaccessible. Communications, usually sped by the Drift, bounced back to senders. Triune fell silent. Across the galaxy, other Drift-related phenomena struck suddenly and seemingly at random. Drift beacons flickered, shut down, moved, vanished, or even exploded. Creatures native to the Drift suffered injury, malfunction, and transformation. Portions of the Drift suddenly seemed to flow in reverse: rather than absorbing parts of other planes, fractions of the Drift spontaneously seeped into the Material Plane. In some places, this manifested as extraplanar detritus; in others, the unstable technology bonded to living creatures. This first day of devastation is known as the Drift Crash or, colloquially, as just the Crash.