create_artifact_al_taj_crown_effect

create_artifact_al_taj_crown_effect = {
	# Get the character the artifact is being made for.
	$OWNER$ = { save_scope_as = owner }

	set_artifact_rarity_illustrious = yes

	# Create the artifact
	create_artifact = {	
		name = al_taj_crown_name
		description = al_taj_crown_description
		template = unique_crown_wearable_template
		type = helmet
		visuals = al_taj_crown
		wealth = scope:wealth
		quality = scope:quality
		history = {
			type = created_before_history
			date = 670.1.1 #To order entries correctly
		}
		modifier = al_taj_modifier
		save_scope_as = newly_created_artifact
		decaying = no
	}

	scope:newly_created_artifact = {
		set_variable = { name = historical_unique_artifact value = yes }
		set_variable = al_taj
		save_scope_as = epic
		set_variable = {
			name = artifact_succession_title
			value = title:d_shiite #Caliphate
		}
		add_artifact_title_history = {
			target = title:d_shiite #Caliphate
			date = 881.1.1
		}
	}
}

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