Is it an asset or a detriment that his expertise is on the matter?

"The soul's importance is paramount. It makes you everything that you are, everything that you were, and everything that you will be." In life and beyond death it is the one thing that remains. "To poison the soul is no small thing. It would speak for this afflictions power if that is the case."

He silently thinks of his own shard and the sullying that the Kenoma inflicted upon it. Such a thing is never far from his mind.