is it impossible to beat ozma with Zidane, quina, garnet and eiko?

[Nishan]

To put it simply: I have focused leveling them because they fell behind. My team is in the late 80s/early 90s but I find it difficult to do good damage against ozma without steiner...

I just hate spending another day or two grinding. Even with the 3x speed boost the lambs usualyl infect one of my party members keeping them from gaining exp.

I mean its obviously possible to beat ozma with anyone, but I'm not sure what to do. I equiped abilities to fight his curses and he just 1 hit kills me with meteor...

[Narcoleptic Marshmallow]

Zidane's Thievery will do a 9999 every time if you stole enough items. If not, if you have the Ultima Weapon, and if you finished the friendly enemies encounters, his normal attacks should do acceptable damage. You could also get him close to trance before entering the fight so he will activate it soon, and be able to cast Grand Lethal which should do the 9999 you want.

Quina's Frog Drop will do a 9999 if you caught enough frogs to get the Gastro Fork plus two (101 in total), at level 99. Alternatively, if you have Limit Glove, you can have her cast Auto-Life on herself and hope she gets up with 1 HP, then Limit Glove will do 9999 per hit as well.

Eiko's Holy, with holy boosting equipment, should do that much damage as well or close to it. When in trance she will be able to cast it twice per turn. However you must keep in mind that you may trigger a Curaga counter that will heal Ozma by at least as much HP as you just dealt.

Garnet is not going to do a lot of damage and you should keep her buffing everyone, and healing and reviving Zidane and Eiko, if you're going for Quina's Limit Glove. Maybe cast Ark if you finished the friendly enemies encounters and have met Hades.

Make sure everyone has at least Clear Headed activated. Auto Regen works as well due to how long some animations can take. Put everyone on back row and give Zidane Long Reach, Bird Killer, and MP Attack if you're just attacking. You could give Quina the Auto Life ability but it's unlikely that it will revive her at 1 HP.

You can also always keep a member of your party at a level multiple of 5. Ozma will cast Level 5 Death if he can kill someone with it, that will waste a turn killing only one of your characters when he could cast Meteor or Flare Star and kill everyone.

Ozma will occasionally cast Doomsday. If you have finished the friendly enemies encounters (you really should go finish them if you haven't as you may have noticed), Doomsday will deal roughly 9000 damage to himself, instead of healing him for that amount.

Ozma is the game's superboss and it's supposed to be the hardest fight, even at level 99 Ozma will still wipe the floor with you. If you simply can't survive his attacks you will have no choice but to pick your best party and level up more.

[Geralt]

Also you should equip armour with Shadow absorb.

[peachk33n]

Your exact team is the one that I solely used when I first played on the PS1 and I beat Ozma with them. So it is possible! I dont think they are a bad team, just equip your self well and make sure Quinna has the Frog Drop spell doing 9999 and make sure you have finished the Friendly Monsters quest so that you can attack Ozma with regular attacks!