Crumble
Nial released the power of the Vengeance of Chaos ability to break through the weakest seam that held the laboratory together.
It was impossible to create a laboratory of that size from a single piece of marble. There were also runic constellations carved inside the marble, which made it even more obvious that the hidden laboratory was actually a structure made from countless pieces of marble.
Nial could feel that everything seemed to belong together but his dark energy had found the seams, every point that connected the rest. He looked for the weakest and released his strongest attack, breaking everything apart.
There was no hesitation in his movements as darkness wings spread out of his back to slow his fall as the ceiling collapsed.