We tested these guys last night! They were very interesting but surprisingly very weak. Here's some thoughts:
I think you should roll the Omen die every turn to make for some more interesting interactions.
It might be nice for Prophecies to be facedown. In our game, people were intentionally denying them prophecies.
I don't think there should be a limit to Paladins. I was sadly unable to build many turns and only ever had 2 palaces. However, it felt very limiting to not be able to get more Paladins at that point.
Finally, I think they should have more base actions. Maybe Recruit and Score should be a step instead of an action, but either way I think they need a minimum of 3 automatic actions. I never had more than 8 warriors on the map and 2 palaces, since there just weren't enough actions to police, recruit, score, and try to fulfill prophecies.
Overall however, I really like the theme of this faction and think it's very creative and worth finishing up. I'll be excited to hear any future developments!