I have a secret for you did you know if you have someone to cast reflect on the hole party and then have Vivi cast a magic attack on the whole party the magic will hit the enemy four times in a row. So you know who I choose all the mages first Vivi, then Quina, and then Garnet, we're still missing a red and green mage though oh and also a purple.
Mighty guard will get you out of a lot of situations.