"What the hell did this kid use just now?!!!" from behind, and using his spirit power to witness everything happening, he could see the shocking effects of William's ball.
From the first look, he felt this ball was dangerous. But he never expected its terror to reach such a scale. The ideas he got from the outer surface was that this ball depended mainly on the darkness element, with other elements like lightning and light twinkling from time to time.
But when William let it fall on the ground, the ball exploded like it was made out of thin glass. The ball shattered in a flash, turning into tons of little pieces that covered a huge area around.
And then fog appeared!
The fog seemed to get stored inside the ball. Sloth couldn't detect it at first, until the ball crashed and shattered. And when the fog appeared, he couldn't get what element it belonged to.
