Been thinking of something interesting for Fen. He mumbles in his sleep, but not your average "No, get away" or weak chuckles or moans, instead it's a quiet, broken string of demonic words, words you don't understand, words you may not want to pay attention to. as he grows stronger through learning more about his new nature, training, growing stronger, defeating other demons that may enter his territory and challenge him those words grow stronger, turning from broken strings into deep, full-on incantations that could do things from open a small portal summoning something/one to this plane or driving those that hear it mad or implanting corrupt thoughts that would grow. Eventually his breath, during these states where he acts as somewhat of a tether between planes, would grow from normal, to a light mist, to a full on miasma that would affect those around him. And when he wakes he would have no knowledge of any of this and would come to a slow realization either through being informed by friends or seeing effects of those around him.

I feel that it's lame, very lame, but cool at the same time. I like uncontrollable circumstances, and recently saw somethings that involved gravely demonic ramblings that drove people crazy and thought it'd be perfect to put those two together.