set_weapon_artifact_type_effect

set_weapon_artifact_type_effect = {
	save_temporary_scope_value_as = {
		name = allow_no_type_option
		value = $NO_TYPE$
	}
	# Historically many of these types of weapon were used in some combination, but to give a clearer portrayal to the player we have to simplify it a bit
	hidden_effect = {
		$BASE_SCOPE$ = {
			#The type has been decided in events, when the character got inspired, or now. Let's save it! (might still leave it up to the sponsor if allow_no_type_option = yes!)
			if = {
				limit = {
					NOT = { exists = var:artifact_weapon_type }
				}
				random_list = { #What weapon do they want to forge?
					10 = {
						set_variable = {
							name = artifact_weapon_type
							value = flag:artifact_weapon_type_axe
						}
					}
					10 = {
						set_variable = {
							name = artifact_weapon_type
							value = flag:artifact_weapon_type_dagger
						}
					}
					10 = {
						set_variable = {
							name = artifact_weapon_type
							value = flag:artifact_weapon_type_hammer
						}
					}
					10 = {
						set_variable = {
							name = artifact_weapon_type
							value = flag:artifact_weapon_type_mace
						}
					}
					10 = {
						set_variable = {
							name = artifact_weapon_type
							value = flag:artifact_weapon_type_spear
						}
					}
					10 = {
						set_variable = {
							name = artifact_weapon_type
							value = flag:artifact_weapon_type_sword
						}
					}
					50 = { #They don't care and you can decide!
						trigger = {
							scope:allow_no_type_option = yes
						}
						modifier = {
							add = 30
							has_personality_submissive_trigger = yes
						}
						modifier = {
							add = 9890 # ~1% chance of being predetermined if comissioning from a local artisan.
							has_character_flag = local_artisan
						}
						ai_value_modifier = {
							ai_boldness = -0.25
							ai_energy = -0.25
						}
						# Don't set on creation so that the player has more input on what gets forged in inspiration start events, like fund_inspiration.0015
					}
				}
			}
		}
	}
}

As written in game/common/scripted_effects/00_ep1_artifact_creation_effects.txt.