adopt_effect

adopt_effect = {
	$CHILD$ = { save_scope_as = adoptee }
	$ADOPTER$ = {
		save_scope_as = adopter
		adopt = scope:adoptee
		scope:adoptee = {
			if = {
				limit = { exists = scope:adopter.house }
				hidden_effect = {
					set_house = scope:adopter.house
				}
				custom_tooltip = adventurer_adoption_child_tt
			}
			# Remove bastard traits
			if = {
				limit = {
					has_any_bastard_trait_trigger = yes
				}
				remove_all_bastard_traits = yes
			}
		}
		# Parochial vassals hate this
		if = {
			limit = {
				NOR = {
					has_game_rule = adoption_always_allowed
					culture = { has_cultural_parameter = allows_adoption }
				}
			}
			every_vassal = {
				custom = every_courtly_vassal_actor
				vassal_stance = courtly
				limit = {
					NOT = {
						rite ?= { rite_has_parameter = tenet_adoptionism_adoption_accepted }
					}
				}
				add_opinion = {
					modifier = angry_opinion
					opinion = -20
					target = scope:adopter
				}
			}
		}
		# Zealous vassals *hate* you adopting a heretic
		if = {
			limit = {
				faith = {
					faith_hostility_level = {
						target = scope:adoptee.faith
						value >= faith_evil_level
					}
				}
			}
			every_vassal = {
				custom = every_zealot_vassal_actor
				vassal_stance = zealot
				limit = {
					NOT = {
						rite ?= { rite_has_parameter = tenet_adoptionism_adoption_accepted }
					}
				}
				add_opinion = {
					modifier = angry_opinion
					opinion = -25
					target = scope:adopter
				}
			}
		}
		else_if = {
			limit = {
				faith = {
					faith_hostility_level = {
						target = scope:adoptee.faith
						value >= faith_hostile_level
					}
				}
			}
			every_vassal = {
				custom = every_zealot_vassal_actor
				vassal_stance = zealot
				limit = {
					NOT = {
						rite ?= { rite_has_parameter = tenet_adoptionism_adoption_accepted }
					}
				}
				add_opinion = {
					modifier = angry_opinion
					opinion = -20
					target = scope:adopter
				}
			}
		}
		else_if = {
			limit = {
				faith = {
					faith_hostility_level = {
						target = scope:adoptee.faith
						value >= faith_astray_level
					}
				}
			}
			every_vassal = {
				custom = every_zealot_vassal_actor
				vassal_stance = zealot
				limit = {
					NOT = {
						rite ?= { rite_has_parameter = tenet_adoptionism_adoption_accepted }
					}
				}
				add_opinion = {
					modifier = angry_opinion
					opinion = -10
					target = scope:adopter
				}
			}
		}
		# Minority vassals *love* you adopting a foreigner
		if = {
			limit = {

As written in game/common/scripted_effects/05_dlc_bp2_effects.txt.