Heaven Egg Rain
Starting 37 years before the Demon Wars on Legere began, the Heaven Egg Rain occurred. This time period would have been parallel to the time about midway through the Core's manufacturing of Ancients.
These "eggs" appeared completely dormant, but people centered a great amount of awe on these eggs. Many people worshipped them. Others simply celebrated their arrival. Many myths and legends formed, trying to explain how and where the eggs came from. The two year period where these eggs appeared over was dubbed the time of the Heaven Egg Rain. Note that many of these myths and legends were shattered once the true purpose of the eggs were revealed in the Demon Wars.