Damian stayed awake the whole night, keeping watch while reading some of the books he had collected over the years. The one in his hand discussed a theory of magic called 'The Darven Umbilical Point.' Apparently, a renowned mage and researcher named Oshileaus Darven posited that the world had a threshold for the amount of mana it could sustain at any given time, how much he didn't mention. When this threshold was exceeded, more dungeons and natural disasters emerged as a mechanism to reduce the number of mana-bearing entities, thereby restoring balance. It was, according to Darven, nature's way of healing. And the reason why the past civilizations had almost wiped clean from the face of this world without leaving any noticeable signs of their lifestyle.