create_artifact_heirloom_seal_effect

create_artifact_heirloom_seal_effect = {
	# Get the character the artifact is being made for.
	$OWNER$ = { save_scope_as = owner }
	# Get artifact quality and wealth
	set_artifact_rarity_illustrious = yes

	# Create the artifact
	create_artifact = {
		name = heirloom_seal.name
		description = heirloom_seal.desc
		creator = scope:owner
		visuals = special_seal
		type = seal_of_investiture_court
		wealth = scope:wealth
		quality = scope:quality
		template = general_unique_template
		modifier = heirloom_seal_modifier
		save_scope_as = newly_created_artifact
	}

	scope:newly_created_artifact = {
		set_variable = { name = historical_unique_artifact value = yes }
		set_variable = heirloom_seal
		save_scope_as = epic
		add_artifact_title_history = {
			target = title:h_china
			date = 1.1.1 #Actually 221 BCE
		}
		set_variable = {
			name = artifact_succession_title
			value = title:h_china
		}
	}
}

As written in game/common/scripted_effects/01_exp1_historical_artifacts_creation_effect.txt.