Doomsday all the way. Do 9999 to all your enemies and heal you to full health (with shadow absorbing equipment)? Yes please.
FFVI's Merton/Meltdown. PWN.
I voted Ultima, 'cuz it's purdy. I think FFVIII's Apocalypse should be considered n.n
...though I wouldn't have voted it anyway :P
I would vote doomsday and I never knew I could heal with it, that would have made a lot easier
Thinking about it, FFVII's Ultima looks exactly how I imagined the killing curse from Harry Potter would look.
I love using meteor spells though. Nothing spells awesome like hundreds of meteors smashing your opponents.
Not my words Carol, the words of Top Gear magazine.