Voiderling's true form

'Just what is going on up there?' Callane thought, gritting her teeth and clasping her hands into fists as she tried to fight off the overwhelming sense of powerlessness.

Hidden underground, all she could do was register every shake, every noise, and every wave of mana, trying to piece them together to form some sort of picture of the events above.

But just from those few cues?

All that Callane could tell was that the fight continued.

The shaking didn't stop. Instead, it only grew more intense and… louder, with the noise of Theo's attack soon reaching even as far underground as they were. It was only after several minutes that the intensity began to first decrease… and then change, implying some sort of shift.

Not the end of the fight — not when the walls of Callane's underground hideout continued to shake, with bits of dirt and stone continuously trickling down the walls.

But something definitely changed.