"I volunteer," Aaron said, standing up and putting my bag down. "I might as well get it over with."

Aaron walked up to the position where his powers would be tested, right in the center of the room. There, everyone could see him clearly, and they could see his powers. With no reason to draw this out, Aaron took a deep breath. He could pull his powers out of himself at a whim, so he would. His powers tired him out quite quickly, so he would make this quick. It was a bit disappoint really, that he couldn't force himself to do more.

A shape, possessing a color that was not quite white, began to emerge from Aaron's hand. As it continued to stretch out of Aaron's hand, its monstrous shape began to emerge. The whitish material that emerged from Aaron's hand took on a chaotic, discordant, shape, that was purely nightmarish. The material at last began to stop extending once it was past Aaron's head. Aaron took hold of the bottom of it, grabbing onto it like there was a handle.Aaron's mind was ablaze now. His heart was beating faster, and his thoughts were unclear. He could feel something deep inside him slipping away, and something less desirable replacing it.

"My uncle called it aether. This here...can slice even steel, maybe even steel," Aaron said, his breath short and his voiced notably strained and tortured. 

To further show his power, he sliced a nearby bench with a single slice of his "blade." The bench was far from destroyed, but Aaron had clearly sliced the thing into two.