This combo is fragile and one of those things that works at Emperor on down but not so well on Immortal and Deity. I am trying a Sacred Sites tactic, on Immortal using Boudicca, with limited success that is allowing for ICS but not the super finish times produced here. All it takes is one Piety-focused AI to beat you to Sacred Sites or 2-3 Religion-focused AI in the game to snarf up all the Faith buildings and the tactic crumples. Not broken. Glass cannon.