rite_yearly_hor_divergence_drift_commit_effect

rite_yearly_hor_divergence_drift_commit_effect = {
	random_rite_tenet = {
		limit = {
			NOT = { is_in_list = drift_tenets_before }
		}
		save_scope_as = diverged_added_tenet
	}
	scope:diverged_hor = {
		random_character_doctrine = {
			rite_filter = scope:diverged_rite
			limit = {
				NOT = { is_in_list = drift_doctrines_before }
			}
			save_scope_as = diverged_added_doctrine
		}
	}

	if = {
		limit = {
			OR = {
				exists = scope:diverged_added_tenet
				exists = scope:diverged_added_doctrine
			}
		}
		scope:diverged_hor = {
			add_character_flag = hor_already_drifted_rite_flag
		}
		if = {
			limit = { scope:diverged_change <= -1 }
			scope:diverged_rite.faith = {
				change_fervor = {
					value = notable_fervor_value
					desc = fervor_gain_pam_rite_consolidated
				}
			}
		}
		else_if = {
			limit = { scope:diverged_change >= 1 }
			scope:diverged_rite.faith = {
				change_fervor = {
					value = significant_fervor_loss
					desc = fervor_loss_pam_rite_diverged
				}
			}
		}
		rite_yearly_hor_divergence_drift_notify_effect = yes
	}
}

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