Zachary was very interested in this item, as if he were able to refine and produce it himself, its usefulness in his hands would become even greater.
After all, Zachary wouldn't necessarily have to shoot it into the prey's head in the form of bullets.
He could casually place it into items like flying needles and attack using the Art of Controlling Objects, which is much more convenient and covert than using a sniper rifle.
As for the durability of the controlled objects, as long as they can penetrate the defense, the more fragile the carrier, the better. After all, when the time comes, it won't be the object controlled by the Art of Controlling Objects that matters, but the special concoction embedded within it.
Zachary looked at the tiny amount of substance in his hand and thought that since he didn't have the technology to do it himself for now, he could only store it in his Storage space temporarily.