The Crossover

The Crossover was an event that took place on Baelor around 7500 BFA. Groups of Eladrin - ancestors of modern day elves that exist within the Feywild - travelled to the Prime Material Plane for the first time, entering through natural portals in the Everglenn. The Everglenn is a large forest in eastern Baelor, created when Farrah was slain during the Celestial War. The nature of Farrah's magic allowed the magic of the Feywild to bleed into the Prime Material Plane where her body fell, creating the enormous forest and causing natural portals to open up within that connect the two planes.

Some Eladrin elected to stay within the Everglenn, abandoning their lives within the Feywild. Over thousands of years, these Eladrin eventually evolved into modern day elves. Although they made some contact with the other races on Baelor, they remained largely secluded within the forest until the Fey War, during which the elves attempted to conquer Baelor. After peace with the other races was achieved, elves began to disseminate into Baelor society, and eventually, across all of Gaia.