This could lead to some weird circular problems. Consider a warlock breaks a law. He gets lawbreaker. Now he breaks enough laws that he has many different lawbreaker powers. He goes into negative refresh land. Does he then lose all of his ranks in lawbreaker?
At the point he becomes an NPC, the GM determine how he wants the guy built. If the GM decided to stat up a Fae with Lawbreaker because that would provide the mechanics he desired, then he should do that. If he wants to keep the lawbreaker status on a Warlock that is now at negative refresh, then that's his call.
I was only saying a GM doesn't have to give lawbreaker powers to the above Warlock if he breaks a new law after reaching negative refresh, imho. Might want to though. Then again, he might want Chronovores, a time monster he just made up, to have Lawbreaker: Sixth Law, to give him the mechanics/flavor he likes.
It's pretty well established that lawbreaker only applies to mortals.
Is it? Doesn't quite seem clear to me that Angels can't get Lawbreaker. Of course, we don't really see them fighting (but that's a good way to resist any lawbreaker issues). Beyond that, I don't think we see any non-humans that are said to have free will. The game associates "free will" with positive refresh.
The thing I look at (that has some basis in the books as people describe how the laws work) is that the lawbreaker power is acquired when you take the innermost living part of you (your magic) and use it to pervert the life around you. That's why I think that when you're using someone else's magic it's not something that changes you nearly as much. Just my thoughts, though.
Lawbreaker is fundamentally about Belief. To kill someone with magic, you have to BELIEVE they deserve to die and you have a right to kill them because otherwise the magic won't work. There's nothing in the game remotely indicating that belief isn't necessary for Sponsored Magic. If you have Summer Magic, and you want to burn someone with fire, you still have to fundamentally believe that is your right. That's represented in the game by the magic working off YOUR Discipline and YOUR Conviction and YOUR Lore. You aren't buying the spell effect with your Sponsored Credit Card, you are just buying the magical juice to power it and granted you get access to some know-how as well -- your will, however, is still what shapes it.
Granted, this is purely a game mechanic argument, so there's a potential problem there. The books really don't go over sponsored magic that much so we can't
really go off of lore. However, letting someone with sponsored magic go around killing without a problem isn't a great idea either (few sponsors would care about the ethics of it).
is a pretty poor example of "Guy who only doesn't break the laws only because it would twist him." He pretty much follows the laws because he believes strongly in them and is unlikely to break them even if the opportunity presented itself.
I grant the lore argument is problematic. The books don't give us much to go on. That said, they don't treat casting Sponsored Magic as a fundamentally different PROCESS than other magic. Hmm, Soulfire probably provides the most detail, and it is very, very clearly treated like any other kind of magic; it is just powered by different batteries.