[Espy]

Sorry for the double post, but I'm having slight issues with character design.

So my character, like I said, has a bit of demonic power, aka Taint, in him, and it's basically tied down to one arm. Because of that Taint, he's able to use dark/blood magic, but he also wields an exorcism sword (massive broadsword, the blade of which he usually doesn't need to use and instead is the way he channels magic).

The character's not exactly /strong/, so would it make sense to have him wield the sword with his possessed arm and cast with his normal one, or vice versa? The problem with having it the first way is it makes /sense/ to have him cast demonic magic with a demonic arm. But then again, I don't think he would have the strength to wield the sword with his normal arm, unless it was like...magically bound to him or something. Which it isn't, really.