create_artifact_phallus_effect

create_artifact_phallus_effect = {
	# Get the character the artifact is being made for.
	$OWNER$ = { save_scope_as = owner }
	$CARPENTER$ = { save_scope_as = carpenter }
	hidden_effect_new_object = {
		# Get artifact quality and wealth
		get_artifact_quality_effect = yes
		get_artifact_wealth_effect = yes

		# Create the artifact
		scope:owner = {
			create_artifact = {
				name = artifact_wooden_phallus_name
				creator = scope:carpenter
				description = placeholder
				visuals = small_box
				type = miscellaneous
				modifier = artifact_placeholder_modifier
				save_scope_as = newly_created_artifact
				wealth = scope:wealth
				quality = scope:quality
			}
		}
		scope:newly_created_artifact = {
			set_artifact_description = artifact_wooden_phallus_description

			# Add artifact modifiers
			if = {
				limit = { rarity = common }
				add_artifact_modifier = artifact_fertility_gain_1_modifier
				add_artifact_modifier = artifact_spouse_opinion_add_1_modifier
			}
			else_if = {
				limit = { rarity = masterwork }
				add_artifact_modifier = artifact_fertility_gain_2_modifier
				add_artifact_modifier = artifact_spouse_opinion_add_2_modifier
			}
			else_if = {
				limit = { rarity = famed }
				add_artifact_modifier = artifact_fertility_gain_3_modifier
				add_artifact_modifier = artifact_spouse_opinion_add_3_modifier
				add_artifact_modifier = artifact_seduce_scheme_phase_duration_add_1_modifier
			}
			else_if = {
				limit = { rarity = illustrious }
				add_artifact_modifier = artifact_fertility_gain_4_modifier
				add_artifact_modifier = artifact_spouse_opinion_add_4_modifier
				add_artifact_modifier = artifact_seduce_scheme_phase_duration_add_2_modifier
			}
			remove_artifact_modifier = artifact_placeholder_modifier

			set_variable = commissioned_wooden_phallus
			set_variable = {
				name = quality
				value = scope:quality
			}
		}
	}
}

As written in game/common/scripted_effects/01_ep1_court_artifact_creation_effects.txt.