gamespro

Best answer as chosen by Asker / Ratings
The best thing to do is to split them up, when they run after you take the exit to the left where you went during operation Mi'hen from here you will need to run to the end and you can fight them individually it will still not be an easy fight though. You will need the majority of the stats for the three main characters you normally use maxed and you should have all their celestial weapons fully upgraded aswell, have haste, protect and shell on all of them just keep attacking and healing when you need to auto-life will also help, it's a good idea to use your own aeons provided they are really strong such as Anima or your own Magus sisters but that is only if you manage to split them up. If you still can't beat them then you can always try to get Yojimbo to use Zanmato on all 3 of them at once.

The Neslug in the Calm Lands monster arena usually drops luck spheres when you beat it.