I'm not sure whether it doesn't cause bodily harm. At the least it does look pretty painful.
We have plenty of in-universe examples where people got bloodbent, and were fine enough to fight at peak strength right afterwards. It might cause pain, but certainly not harm.
Originally Posted by Inevitability
Greater
\ˈgrā-tər \ comparative adjective
1. Describing basically the exact same monster but with twice the RHD.
Originally Posted by Artanis
I'm going to be honest, "the Welsh became a Great Power and conquered Germany" is almost exactly the opposite of the explanation I was expecting