Gifts
Nial clearly remembered Dilan, the Undying, easily enduring the pain of getting killed thousands of times while retaining his sanity to a certain degree.
This was something Nial was clearly jealous of since he did not have that level of patience or endurance. His mind was being fogged by the desire to switch off his pain receptors and turn into a madlad that was not afraid of pain or affected by it anymore.
He was not sure how long it took before the reinforced dark energy was solidified and anchored inside the Sea of Darkness, but Nial felt extremely exhausted.
In fact, he even gave in to exhaustion and decided to lie down on the ground of the isolated room for a few hours despite its appearance of having sustained an earthquake. Even the runic constellations that were supposed to repair everything that had been damaged failed to function correctly after a while.