Erin shakes her head and talks while she goes to get her instrument and set it up, which will be a moment; it uses an amp. "Iron doesn't get on with my brand of magic. If it's any comfort to you I'm powerless against that pipe; it'll cut through anything I can throw at it, shatter my sword, an' kill me nice and dead. The blindfold that lets me see perceives it as like...negative space. Your turn, why the iron?"