pam_heresy_c1_pick_diverging_rite_effect

pam_heresy_c1_pick_diverging_rite_effect = {
	clear_saved_scope = diverging_rite

	random_faith_rite = {
		limit = {
			this != faith.main_rite
			rite_counties >= 1
			head_of_rite ?= { is_ai = yes }
		}

		weight = {
			base = 5
			# More divergent rites are more likely to deepen further.
			modifier = {
				add = 10
				"divergence(faith.main_rite)" >= 25
			}
			modifier = {
				add = 20
				"divergence(faith.main_rite)" >= 50
			}
			modifier = {
				add = 20
				"divergence(faith.main_rite)" >= 75
			}
			# Pluralism-resistant rites are less prone to lurching toward heresy.
			modifier = {
				factor = 0.5
				rite_has_parameter = pluralism_pluralistic_resistant_to_heresy
			}
			# Insular Celtic and Mozarabic are doctrinally weird but historically not the seedbed for heresy outbreaks; dampen without excluding outright.
			modifier = {
				factor = 0.1
				OR = {
					this = rite:insular_celtic
					this = rite:mozarabic_church
				}
			}
		}

		save_scope_as = diverging_rite
	}
}

As written in game/common/scripted_effects/pam_heresy_shared_effects.txt.