hostage_ward_yurt_effect

hostage_ward_yurt_effect = {
	root = {
		every_courtier = {
			limit = {
				is_hostage_of = root
			}
			add_to_list = temp_yurt_hostages
		}
	}
	random = {
		chance = {
			value = "list_size(temp_yurt_hostages)"
			multiply = $CHANCE$
			min = 0
		}
		root = {
			random_courtier = {
				limit = {
					is_hostage_of = root
				}
				save_scope_as = yurt_hostage
			}
			random_relation = {
				type = ward
				save_scope_as = yurt_ward
			}
			if = {
				limit = {
					exists = scope:yurt_ward
				}
				send_interface_message = {
					title = hostage_ward_yurt_effect_tt
					desc = hostage_ward_yurt_effect_desc
					left_icon = scope:yurt_ward
					right_icon = scope:yurt_hostage
					scope:yurt_ward = {
						random_list = {
							1 = { add_diplomacy_skill = 1 }
							1 = { add_stewardship_skill = 1 }
							1 = { add_intrigue_skill = 1 }
							1 = { add_learning_skill = 1 }
							1 = { add_martial_skill = 1 }
						}
					}
					scope:yurt_hostage = {
						increase_wounds_no_death_effect = { REASON = beaten }
					}
					root = {
						add_prestige = 200
					}
				}
			}
		}
	}
}

As written in game/common/scripted_effects/09_dlc_mpo_scripted_effects.txt.