An incomplete elixir

"I'm guessing you should know my answer by now." Lank narrowed his eyes at him, not deeming it necessary to give a direct answer.

Nodding his head in understanding, Obsidian took the jar once more, "this one right here is the strongest and most unstable of the bunch."

He shoved the jar into Lank's hand, warning him not to drop it as it was uncertain what sort of chaos could unfold.

Lank felt a course of heat sweep through his body. 

"What is this thing?" Lank hissed, pushing his hand away from his body and staring at it from a distance.

He wondered why this was the most unique and the strongest, what could it possibly do to make it the strongest?

"That is an incomplete elixir." Obsidian laughed out and took back the jar. 

He tightened the lid and smiled, "there are some benefits to having augmented hearing, don't you think?"