Since the Veilwyn can make clones of itself to help it fight, (seven total with the original), you could stack defensive traits on one and set it to aggressive to help clear cave Dinos. The traits *seem* to apply to all of them and from personal testing and they are alright at clearing Onyc and most bugs, but they can't use/refresh the cloning ability if in water. The whistle command also has to be used every 90 seconds, but is manageable.