"Another sub-divine artifact! Within it lies the divine nature of plunder and destruction; does it originate from Plunderer Karazgos?" Although the Skeleton Slayer phrased it as a question, he was almost certain of his assumption.
After all, it is perfectly reasonable for someone who controls the divine nature of plunder to possess a sub-divine artifact related to plundering.
"Indeed!" Gaven openly admitted. "Plunderer Karazgos not only controls the divine offices of plunder and destruction, but also the divine office of weapon mastery, earning him the reputation as the Master of a Hundred Arms. I merely borrowed a portion of his strength in that area."
Even with his extensive experience in weaponry, he couldn't immediately master a brand-new exotic weapon upon acquiring it.
However, with the help of divine nature force, it's a different story.
Any weapon in these arms will automatically be mastered, including the Meteor Hammer.
