That sounds very reasonable to me. I am thinking, though, because they are very similar to gods, that, once the thing has been created, they can each pretty much manipulate it any way they want. Of course, the one towards which they are more inclined, positive or negative, is the manipulation that would be easier for them. But they can both do some pretty outrageous things. Not that they would, per se, because I would imagine that they are both fairly balanced individuals, but, should they need to, they could create, more than a breeze, but a tornado or hurricane.