Thomas can perform minor spells, he does this in his pov short story
My 2 cents:
I feel a WCV *could* take up spellcasting, and an inventive player could develop dramatically compelling reasons to do so. Easier to justify would be a White Court Virgin trying *not* to give in to the Hunger (if that's your flavor of trouble).
I think in the case of non-practitioner use of tracking spells could be explained away as a Resources Declaration that he had trained and paid money to be able to do this particular thing, or perhaps an Aspect Invocation to justify access to the ritual effect. One must admit, though, that in the fiction, it didn't work out as well as he wanted, which may indicate that he failed the Lore check, and the GM said "yes, you succeed, BUT now it's a trap and now your investigation is complicated in this whole new way."
There is also another question: would WCV casters have to take Lawbreakers?
I think they
I do not think that they would have to take a point in Lawbreaker. Though a WCV would be sorely tempted to mess with someones mind, and would probably give in at some point in their lives.
Personally, I'd say the laws still apply. They are there because of the corrupting effect it has on the caster.
The WCVs still have a soul (Thomas and Harry having the soul gaze that triggered their mother's spell.
), so they would technically still be considered mostly human. Maybe when they lose all of their refresh you could say they have given into the beast and lost their humanity. I will run it in my campaign like this. With all of the musts for a WCV, a player will only be able to get Channeling to start with and a -9 Refresh. No points starting off for Lawbreaker. However, for a NPC it would be very possible. I am not sure what would happen to the Lawbreaker if they gave in to the demon and lost their soul. Will need to think on that one.