I have very little modding experience, except for a couple custom civs made years ago for Civ 5. I am attempting to make a custom civ in 6 and wondering if it is possible to make a custom set of religious beliefs that can only be seen and chosen by a specific civilization. I would also like to make it so that the same civ can't see any beliefs but the custom set. My plan is to tie this into a Leader ability. If anyone has any suggestions I would greatly appreciate it. I am using XML and not SQL and I am not comfortable with anything else.