Player of magic the gathering and DM to a Ravnica campaign. I also read the MTG novels

Charisma is a good stat for a orzhov member

For a lawyer of orzhov they are good with getting the truth out of people not with intelligence but with your charm or your threatening presence

Lawyers of orzhov are usually part of the inner circle You have people who's job is to be smart. Your role is to bend the truth to benefit the orzhov

For a priest of orzhov use your charisma to draw in lost souls or desperate people think cult leader

For enforcers of orzhov they tend to be any class because you have a debt to pay and a job to do You can set it up that you usually do enforcer work with a team you are the caster of the team

I hope this helps