The Wheel of Time was a massive device built in the God Era by the Chronos. It was made to bend space and time over a large area. It had many spell-like powers - time stop, distance distortion, slow, haste, teleportation, phasing, and many others dealing with time and space. The most dangerous power of the Wheel of Time was its ability to send things forward or backward in time. Used in a very deadly manner, a target could be ripped apart as part of them are sent forward and part of them sent backward in time.
In the Yandôr Conflict, Chronos used it to defeat the demon army under General Pazuzu. At the Battle of Enmort, with forces near their end, Chronos intentionally overloaded the Wheel of Time. This caused a rupture in time and space, annihilating the demon army, but also sending Chronos adrift in time. Distortion in time and space still affects the area of Enmort.