In the Demon Spawn War, a rift called the Hezxis Pocket was opened between this world and the Kriav. At the time, Kriav's arcane energy was much more erratic. This caused the rift to become fortified with arcane energy, making it unrepairable by the keepers of the Web - the weave spiders. In a concept called inter-system bleeding, the abyssal world Nasudex became more like Kriav, though with an abyssal taint. Its nature denizens became hostile to civilization, demons, and pretty much anything not an evil fey.