>>3992825
I kind of assume that's why he wanted to make a deal with Charlie. As the princess of Hell, she would have many uses so even if he can't make her hurt anyone, there are still a lot of things she can do for him. Even if it's just a way to get her to trust him, and make her amenable to another deal in the future without that restriction. Though Rosie encourages him to keep working with Charlie, so I guess she isn't too worried about them making deals. It will be interesting to see how things develop through season 2, that's for sure.