That regeneration speed exceeds even mine, but it is at a terrible cost. A cost that I am quite unwilling to pay even though I can probably afford it. Definitely can afford it.
It is the plethora of side effects that are of a great concern.
For example, I wouldn't want all the cells within my body to be in a state of unending flux, threatening to break down any moment, especially when I lose focus or somehow render unconscious.
I am unsure why Mo Shu is not reduced to a pile of bloody mush at the moment due to his cells being in such an unstable state, but I suppose I will find out right after I turn him into a bloody mush myself.
It shouldn't take much effort at all, considering that my speed exceeds his greatly. In this kind of battle, speed is more important than anything, and I do not mean only movement speed.