I figure the outsider is really a true neutral. He just doesn't give a shit. He meddles for fun because nothing else amuses him. I wouldn't be surprised if the plague was his doing. Not bringing it to what's its' name city but the plague itself. I figure the magic just magnifies the character of the person using it, power and all that. I did my first play through going for no kills only because the game is just too damn easy if you kill. I thought that was the point. Going non-lethal is never as easy as just killing everything.