Sheer Physical Might
Krune then swung the Pestlor, watching it hum as it produced faint gales. The satisfaction of wielding it was immediate as he could feel the sheer power imbued in it. The fact that all the laws making it up were part of his Spiritual Incarnation further increased this feeling of satisfaction.
Thanks to this, the control he had over it was absolute. It felt like it was an extension of his body. For a normal weapon master, they would have to train decades or even centuries to attain a state where they would become one with their weapon or where every thought of theirs would cause their weapon to react accordingly.
But in his case, the weapon had become a part of himself in the first place. It was like another arm that he wielded. After all, forming it was a part of his body. And because of this, Krune could understand the property that was in effect over the region, making it act like a virus.