[Ah, so that hand is a weapon. He hadn't wanted to ask.]
I have a lot of experience dealing with unkillable things. Magic is pretty versatile. Maybe I can't fight them directly, but I can keep them from moving as long as they have a shadow, or make a wall of rock and earth to drive them in a certain direction. And they certainly can't hit me unless I get lazy.
...But I'll stay out of it, if that's what you think is best [He doesn't want that to be the case, but he knows all about personal matters and wanting to handle them yourself.]