set_signature_weapon_effect

set_signature_weapon_effect = {
	save_temporary_scope_as = this_character
	# If we're wielding an artifact weapon, override our signature weapon type with what we have equipped.
	if = {
		limit = {
			NOT = { has_variable = temporary_signature_weapon }
			any_equipped_character_artifact = {
				artifact_slot_type = primary_armament
				OR = {
					artifact_type = axe
					artifact_type = hammer
					artifact_type = spear
					artifact_type = mace
					artifact_type = dagger
					artifact_type = sword
				}
			}
		}
		random_equipped_character_artifact = {
			limit = {
				artifact_slot_type = primary_armament
				OR = {
					artifact_type = axe
					artifact_type = hammer
					artifact_type = spear
					artifact_type = mace
					artifact_type = dagger
					artifact_type = sword
				}
			}
			save_scope_as = equipped_signature_weapon
			scope:this_character = {
				set_variable = {
					name = signature_weapon_scope
					value = scope:equipped_signature_weapon
				}
				if = {
					limit = { scope:equipped_signature_weapon = { artifact_type = axe } }
					set_variable = {
						name = signature_weapon
						value = flag:axe
					}
				}
				if = {
					limit = { scope:equipped_signature_weapon = { artifact_type = hammer } }
					set_variable = {
						name = signature_weapon
						value = flag:hammer
					}
				}
				if = {
					limit = { scope:equipped_signature_weapon = { artifact_type = spear } }
					set_variable = {
						name = signature_weapon
						value = flag:spear
					}
				}
				if = {
					limit = { scope:equipped_signature_weapon = { artifact_type = mace } }
					set_variable = {
						name = signature_weapon
						value = flag:mace
					}
				}
				if = {
					limit = { scope:equipped_signature_weapon = { artifact_type = dagger } }
					set_variable = {
						name = signature_weapon
						value = flag:dagger
					}
				}
				if = {
					limit = { scope:equipped_signature_weapon = { artifact_type = sword } }
					set_variable = {
						name = signature_weapon
						value = flag:sword
					}
				}
			}
			clear_saved_scope = equipped_signature_weapon # Clear the saved scope so we don't clone artifacts when this effect is run multiple times in sucession.
		}
	}
	# Otherwise, if we do not have an equipped artifact AND we do not yet have a signature weapon type, pick one at random.
	else_if = {
		limit = {
			has_none_of_variables = {
				name = signature_weapon
				name = temporary_signature_weapon
			}
		}
		hidden_effect = {
			random_list = {
				30 = {
					set_variable = {
						name = signature_weapon
						value = flag:sword
					}
					modifier = {
						add = 150
						culture = { has_cultural_pillar = heritage_japonic }
					}
				}
				
				10 = {
					set_variable = {
						name = signature_weapon
						value = flag:mace
					}
				}
				10 = {
					set_variable = {
						name = signature_weapon
						value = flag:axe
					}
					# Weight up the axe-bearing foreigners chance of bearing axes.
					modifier = {
						add = 150
						has_trait = varangian
					}
					modifier = {

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