The energy in the Heavenly God Plane had been constantly enriched by the society that once called it their home.
It turned golden to exemplify its purity. It became fog in the world as if to show others just how much it had grown. Their findings allowed their society to thrive in a way that many others couldn't. Death, disease, and destruction were problems they eliminated, but even then they faced extinction at some point.
The energy they left had become a ground for other practitioners to receive the final push that took them to a level they could never reach before.
In a sense, their efforts went to a good purpose.
Damien quite liked how it felt as it enveloped him. The energy was warm and inviting. It knew only peace and was never made familiar with the struggles of chaotic times, so it held an innocence that the mana Damien knew did not.