rite_yearly_hor_passive_learning_effect

rite_yearly_hor_passive_learning_effect = {
	if = {
		limit = {
			head_of_rite ?= { is_available_adult = yes }
		}
		random = {
			chance = passive_rite_learning_hor_yearly_chance

			head_of_rite = { save_scope_as = passive_learn_hor }

			faith = {
				random_neighboring_faith = {
					limit = {
						this != prev
						any_faith_rite = {
							rite_counties >= 1
							save_temporary_scope_as = candidate_rite
							OR = {
								scope:passive_learn_hor = {
									any_character_tenet = {
										knowledge_filter = unknown
										passive_rite_learning_candidate_tenet_is_core_trigger = { RITE = scope:candidate_rite }
										count >= 1
									}
								}
								scope:passive_learn_hor = {
									any_character_doctrine = {
										knowledge_filter = unknown
										passive_rite_learning_candidate_doctrine_is_core_trigger = { RITE = scope:candidate_rite }
										passive_rite_learning_doctrine_is_learnable_trigger = yes
										count >= 1
									}
								}
							}
						}
					}
					save_scope_as = passive_learn_source_faith
				}
			}

			if = {
				limit = { exists = scope:passive_learn_source_faith }
				scope:passive_learn_source_faith = {
					random_faith_rite = {
						limit = {
							rite_counties >= 1
							save_temporary_scope_as = candidate_rite
							OR = {
								scope:passive_learn_hor = {
									any_character_tenet = {
										knowledge_filter = unknown
										passive_rite_learning_candidate_tenet_is_core_trigger = { RITE = scope:candidate_rite }
										count >= 1
									}
								}
								scope:passive_learn_hor = {
									any_character_doctrine = {
										knowledge_filter = unknown
										passive_rite_learning_candidate_doctrine_is_core_trigger = { RITE = scope:candidate_rite }
										passive_rite_learning_doctrine_is_learnable_trigger = yes
										count >= 1
									}
								}
							}
						}
						save_scope_as = passive_learn_source_rite
					}
				}

				if = {
					limit = { exists = scope:passive_learn_source_rite }
					scope:passive_learn_hor = {
						random_list = {
							70 = {
								trigger = {
									any_character_tenet = {
										knowledge_filter = unknown
										passive_rite_learning_candidate_tenet_is_core_trigger = { RITE = scope:passive_learn_source_rite }
										count >= 1
									}
								}
								rite_yearly_hor_pick_and_apply_tenet_effect = yes
							}
							30 = {
								trigger = {
									any_character_doctrine = {
										knowledge_filter = unknown
										passive_rite_learning_candidate_doctrine_is_core_trigger = { RITE = scope:passive_learn_source_rite }
										passive_rite_learning_doctrine_is_learnable_trigger = yes
										count >= 1
									}
								}
								rite_yearly_hor_pick_and_apply_doctrine_effect = yes
							}
						}
					}
				}
			}
		}
	}
}

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