create_artifact_wall_skull_effect

create_artifact_wall_skull_effect = {
	$OWNER$ = { save_scope_as = owner }
	$HUNTER$ = { save_scope_as = hunter }
	save_scope_value_as = { name = legendary value = $LEGENDARY$ }
	scope:owner = {
		set_variable = { name = animal_type value = $ANIMAL$ days = 5 }
		if = {
			limit = {
				OR = {
					NOT = { exists = var:animal_type }
					var:animal_type ?= flag:none
				}
			}
			random_list = {
				8 = {
					hunt_activity_standard_game_effect = { PROVINCE = scope:hunter.location HUNTER = scope:hunter }
				}
				2 = {
					hunt_activity_dangerous_game_effect = { PROVINCE = scope:hunter.location }
				}
			}
		}
	}
	if = {
		limit = { exists = scope:adventurer }
		scope:adventurer = { save_scope_as = creator }
	}
	else = {
		scope:hunter = { save_scope_as = creator }
	}
	hidden_effect_new_object = {
		# Get artifact quality, location, and animal
		animal_artifact_wealth_quality_effect = yes
		get_animal_hunt_location_effect = yes
		scope:location = { add_to_list = artifact_material_sources }
		scope:owner = {
			create_artifact = {	
				name = artifact_wall_skull_name
				description = placeholder
				creator = scope:creator
				visuals = animal_trophy
				type = animal_skull
				modifier = artifact_placeholder_modifier
				wealth = scope:wealth
				quality = scope:quality
				save_scope_as = newly_created_artifact
			}
		}
		scope:newly_created_artifact = {
			set_max_durability = 60
			# Set grandeur
			add_scaled_artifact_modifier_grandeur_small_effect = yes
			# Set prestige
			add_scaled_artifact_modifier_minor_prestige_effect = yes
			if = {
				limit = {
					OR = {
						rarity = famed
						rarity = illustrious
					}
				}
				add_scaled_artifact_modifier_dynasty_prestige_effect = yes
			}
			remove_artifact_modifier = artifact_placeholder_modifier
			set_variable = {
				name = animal_type
				value = scope:owner.var:animal_type
			}
			set_variable = {
				name = quality
				value = scope:quality
			}
			set_variable = {
				name = wealth
				value = scope:wealth
			}
			hunt_animal_artifact_modifier_selection_effect = yes
			if = {
				limit = { scope:legendary = yes }
				set_artifact_name = artifact_wall_skull_name_legendary
				set_variable = { name = legendary }
				add_scaled_artifact_modifier_majesty_effect = yes
				add_scaled_artifact_modifier_combat_effect = yes
			}
			else_if = {
				limit = { exists = scope:adventurer }
				set_artifact_name = artifact_wall_skull_name_adventurer
			}
			else = { set_artifact_name = artifact_wall_skull_name }
			set_artifact_description = artifact_wall_skull_description
		}
		scope:owner = {
			remove_variable = adventure_artifact_location
			remove_variable = adventure_artifact_hunter
		}
	}
}

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