Final boss help!

[The Ceej]

I did this last summer. Let's see if I can remember how.

At this point, I had done everything else the game had to offer and made sure that my three main guys had 100 of every powerful spell so I could junction them properly. I didn't know at this point that the battle would pick three people at random, so I was fighting with two. I didn't know that if one of my guys were killed, he'd be replaced, so I kept the unprepared one alive. I used the auto-junction to junction magic for defense. This put spells like Ultima and Full Life on HP, which would lower my HP between battles because of their use.

I did this in one try, so I would say my strategy is flawless if you know what you're doing.

Make sure everyone has Triple and Aura on them. Try not to use Cerberus because it takes a while for GF's to come out. At this point in the game, you shouldn't rely on GF's. Then, use a Holy War the party. This will make you temporarily invincible. Have magic users focus on healing or casting triple-Ultima while Squall does his limit break. After the Aura wears off, you won't be able to cast it again until after the Holy War wears off too, so at that point, have Squall cast triple-Ultima as well. Once the Holy War wears off, repeat the process. Just make sure your HP is kept up. With this process, you should have all three forms killed in less than ten minutes. You probably won't even hear the entire battle song on one or more of the forms because you kill her so fast, so you might want to buy the soundtrack too.

EDIT: I should clarify that just because you shouldn't rely on GF's doesn't mean you shouldn't have them junctioned. You need their abilites.