The realm became a nightmare for beings that were not immortal. Fortunately, transcendents and above can escape. They can leave their plane for the immortal lands or go to the worlds of world gods. Some did immediately while some stayed in fortified cities built by their ancestors. But most left.
As for mana entities who still need to breathe and don't have a solidified divine sense to move through the void outside their planes, they have nowhere to go. Not without the assistance of powerful beings.
All these changes came rapidly. But they couldn't compare to the most important changes to the realm as it prepared for battle. Mother High Heaven used the Origin essence she got this cycle and has been saving for many Origin cycles to fortify the realm.
First, she returned all the planes to their origin. The 100,000 active planes moved through the void and reattached themselves to the ancient battlefield.
