I used the Celestial Weapons. I had Auron's, Yuna's, Lulu's, And Kimahri's. But I only fully did Auron's and Yuna's. Yuna has Break Damage Limit and I swear it does wonder's with Holy! And Auron's sword is good with Flans. You heard me, Flans. He can kill them with one hit and it actually does thousands instead of those wimpy hundreds. It's okay, but it doesn't have Piercing. But if you have Break Damage Limit, it goes to 99999, if you don't have it, it goes to 9999. Bahumut, Anima, and the Magus sisters have Break HP Limit. The Magus Sisters are in the Calm Lands, and to get to Reminem Temple, you have to use a chocobo, and go over there like your going to Macalania Temple, but just keep on going to the right and you'll see a chocobo feather and then go to the entrance and go across the bridge and you'll see the temple. I'm not gonna tell you HOW to get the Magus Sisters, though.