Master's Call

While this looks like a scrap heap assembled from shattered constructs, this eldritch machine possesses great power. A creature in control of it can sense the presence and location of all warforged within 10 miles of the device and can, as an action, send a telepathic message to them laced with enchantment magic. Such a message can be sent no more than once every 24 hours. A warforged who receives the message is compelled to follow one command contained within it. The affected warforged breaks free of the command after 24 hours.