I believe you are referring to the Unseelie Accords, right? If your character could become a Freeholding Lord, , then the Council could demand satisfaction for anything you do to one of their own. Under these Accords, you could be forced to duel one of the Council, like Harry did with Duke Ortega
, so you are by no means protected from them. And if they think that it is too much trouble, they could arrange an... accident to happen.
As for how you would become a signatory of the Accords in your own right? I'd guess you would have to prove that you have a certain measure of magical, political, monetary and/or physical clout. There is probably some body of beings that evaluates your request, I imagine.
Hope this helps somewhat.
I was thinking of making a Character who was the Warden for Poland, is of Jewish decent, and quits the council because they "Wont mettle with Moral affairs"
Does your group see the White Council as a voluntary organization? I don't. Quitting would require the power to take them on...and even that wasn't enough for Kemmler.
So basically I want him to start treading that line into Evil, with an end game of Starting his own Asiele accords recognized organization.
So how does one do that.
You've got to have the power and influence to be recognized while not being opposed by any other powerful organization.
If I straight up murder someone with magic, but I'm an accord member can the white council touch me? even if I'm a former member?
Yes. The accords are not an immune to interference button. They simply codify a basic old world courtesy under which powerful enemies can talk without killing each other. When that breaks down the knives still come out.
Remember two things: Kemmler was hunted down (repeatedly) by the entire White Council rather than letting him leave (part of that is probably because other powers would likely blame the WC for anything any wizard did) and the White Council went to war when a member whom most members disliked broke the accords.
So leaving isn't easy and may not be possible. And, being an accord signatory isn't a protection from anyone willing to either duel or go to war with you...even if you were in the right by the letter of the accords.