create_artifact_trinket_icon_ancient_effect

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

	hidden_effect_new_object = {
		# Get artifact quality, wealth, and materials
		get_artifact_quality_effect = yes
		get_artifact_wealth_effect = yes
		# Create the artifact
		scope:owner = {
			create_artifact = {
				name = artifact_trinket_icon_name
				description = placeholder # Will be regenerated in the post-creation effects
				visuals = trinket_icon
				type = miscellaneous
				modifier = artifact_placeholder_modifier
				save_scope_as = newly_created_artifact
				wealth = scope:wealth
				quality = scope:quality
				history = { type = created_before_history }
			}
		}
		scope:newly_created_artifact = {
			set_artifact_description = artifact_trinket_icon_description
			# Set piety
			add_scaled_artifact_modifier_piety_effect = yes

			if = {
				limit = {
					OR = {
						rarity = famed
						rarity = illustrious
					}
				}
				add_scaled_artifact_modifier_learning_lifestyle_xp_effect = yes
			}
			remove_artifact_modifier = artifact_placeholder_modifier
		}
	}
}

As written in game/common/scripted_effects/07_dlc_ep3_scripted_effects.txt.