Most Useful Spell

[Doors]

That's not a spell though, it's a Limit Break.

Same for Full Life.

[theundeadhero]

No, some FFs have a full life spell.

[MomoPeaches]

Or Life2, which.. is the same thing.

Personally, I think the most useful is Cureag/ja.. I know it's saved my butt many a times. But if it's FFVIII, Aura is right up there. You can never go wrong with full-health limit breaks~

[Macp]

I forgot to put Auto Life on the list.

[Azure Chrysanthemum]

Any cure spell, I constantly keep my characters at high HP.

[UltimaLimit]

Ultima's my personal favorite, but I wish you could use it as well as (SPOILER)Kuja's Ultima attack on FF9. It was a tad anticlimatic in FF7 and FF Tactics. But it's a cool attack spell, and tends to have a short animation (as opposed to some spells/summons that take too damn long).

On the defensive, probably the only healing spells I bother with late in the game are Regen and AutoLife, and possibly Phoenix if I'm in big trouble. For the rest I use items or simply kill everything (with Ultima) before I get too banged up.

[The Great Albino Hippie]

The answer is Aura

The end

Goodnight

[Del Murder]

Auto Life is the most useful. Nothing is more precious than life.

[Ichimonji]

Haste, Curaga, and Auto-Life. It's pretty self-explanatory I assume.

[ljkkjlcm9]

Quick from FFVI is by far the best, you get two turns of attacking, and everyone else is stopped, guaranteed...

now equip a gem box, caste quick then osmose so you don't run out of MP, do some crazy attack, I prefer two cyan Quad Slices, you get a third turn instantly but everyone else starts again, quickly cast again, and repeat. As i have said before, beat the final boss, all forms, without getting hit.

THE JACKEL

[Apollo]

I like Merton,Meteor and Quick from VI.From FFIV Meteo or Nuke.And XXXX from FFI.

[AhhXD514]

My favorites really arent that great.

FFI: Curaja

FFII: Scourge

FFVIII: Demi

FFIX: Bio

FFX: Auto-Life

FFX-2: Stop (Breakdance)

[Rase]

1) Curaga
2) Full Life
3) Reflect

[Llanowar]

Quick from FFVI is hands down the best spell ever. It allows you to have unlimited attacks without ever getting hit as long as you have the gem box equipped I mean a combo like that is ABSOLUTELY UNBEATABLE making quick the best spell ever and it

ISNT EVEN LISTED!!!

[Masamune·1600]

Haste (all), Quick (FFV and FFVI), Auto-Life (or any variant), Aura (FFVIII), and Meltdown (FFVIII) all have their moments.