[@The Omnipotent Sphere]Understood. The Adversary was going to branch out into other portfolios that would include things like mass curses. But this will be too close to your own abilities, regardless of intent. So I'll take the other route; He'll branch off into different portfolios (I think physical charms. One ring to rule them all sounds good). But you should know that "pacts" are central to the Adversary's character too, if not His powers; it is how His demons will manifest in the world. If changes need to be made, they can be made.