As the title says, I want to make the slave faction able to train their priests, which are heretics.
I've got them to be able to act like a normal faction for some extent already, but its kind of sad to see their regions not turning heretic slowly.

Tried adding agent heretic to the walls for instance, but the buildings file will return an error saying there is no such agent/unit, even though it is listed in one of the files (I think descr_characters or descr_skeleton)