damage_artifact_in_battle_effect

damage_artifact_in_battle_effect = {
	# Save scopes for localization
	$OWNER$ = {
		save_scope_as = DAIBE_owner
	}
	$OPPONENT$ = { save_scope_as = DAIBE_opponent }
	$LOCATION$ = { save_scope_as = DAIBE_location }
	$ARTIFACT$ = {
		save_scope_as = DAIBE_artifact 

		# Suppress generic notifications, as we will send custom ones
		set_variable = {
			name = suppress_artifact_notifications
			value = yes
			days = 1
		}

		set_variable = {
			name = DAIBE_damage
			value = $DURABILITY_LOSS$
			days = 1
		}

		# Damage the artifact by the specified amount
		add_durability = {
			value = 0
			subtract = var:DAIBE_damage
		}
	}

	# Transformed into an if / else as I found the following note somewhere else:
	# NOTE: We must not run ANY script after we destroy an artifact, or we will cause errors
	if = {
		# If the artifact has no durability left, destroy it now.
		limit = { scope:DAIBE_artifact.artifact_durability <= 0 }
		destroy_artifact = scope:DAIBE_artifact
	}
	# Send notifications to the relevant party IF the artifact was not destroyed
	else = {
		$OWNER$ = {
			# Send the toast
			send_interface_toast = {
				title = artifact_damaged_toast
				left_icon = scope:DAIBE_artifact
				right_icon = scope:DAIBE_opponent
				if = {
					limit = {
						$IS_DUEL$ = yes
					}
					custom_tooltip = artifact_damaged_in_duel
				}
				else = {
					custom_tooltip = artifact_damaged_in_siege
				}
			}
		}
	}
}

As written in game/common/scripted_effects/00_ep1_artifact_effects.txt.