The Great Planar Shift

Era beginning/end

The planar event that separated Raen'dor from the rest of the Material Plane, forcing it to overlap with the Feywild and the Shadowfell. While the cause of such an event has been one of history's greatest mysteries, it is now (with the Realignment) suspected that it was caused by an ancient conflict between the gods. This event is among the most cataclysmic in Raen'dor history, and the true chaos it wrought when it occurred is unknown.