Come up with some really fun/tricky/taxing/mayhem-inducing Materia combos and post them here, or share your favourite unusual ideas here.
I'll start by reposting what I said in a thread about the HP<->MP Materia then go over some other fun setups I once had...
High Summoner Vincent and the Final Aeon : HP<->MP, MP Plus, MP Plus, HP Plus, HP Plus, as many summons as can fit into the remaining slots
Gambler : Mime-Command CounterOriginally Posted by ReloadXPsi as he elaborated on how this setup works
Bloody unpredictable and at times utterly chaotic. But hey, if you've played the game this far then you'll be that good that you won't be making any bad moves, only good ones, and any good move is worth making twice, right? When I was doing yet another "Job Class" playthrough, I gave this to Cait Sith along with all the status ailments.
It's Morphin Time! : Sneak Attack-Morph (as many as possible), Mega All
Equip this to Yuffie when she's holding the Conformer. Have the Sneak Attack-Morph pair in as many instances as humanly possible. Basically, if Yuffie doesn't successfully Morph everything on her first account, then she will keep trying until she runs out of Sneak Attacks. If you've got that Gambler setup on anyone (Yuffie included) then you really can't go wrong. An absolute godsend on the Gelnika when you're trying to max out all the stats but you're afraid of the annoying status ailments some enemies use... unless of course you've already used this setup against a few Master Tonberries for some Ribbons... bitchin'! It's a bit boring running around for a random encounter only for it to end before you press a button, but never mind.
Mage Masher XL : Weapon : Contain-Added Effect, Mystify-Added Effect, Time-Added Effect, Seal-Added Effect
Barring any immunities, your physical attacks will be capable of inflicting Silence, Sleep, Slow, Stop, Confuse, Berserk and Petrify. Frankly I wish the Hades Materia could do this.
I'd Like to Pre-order Battletoads : Weapon : Transform-Added Effect (vital), Mystify-Added Effect (optional), Poison-Added Effect (optional)
Potentially cripples enemies that would normally be strong. Earlier on in the game when this would be more useful, you'll probably only have one Added Effect Materia, therefore pairing it with Transform to severely weaken your enemies takes priority.
Time Mage : Time-Added Effect (weapon), Time-All, Restore-All, Comet, Exit, Gravity-All, W-Magic, W-Item
A pretty straightforward setup that turns the character in question into my favourite JobTime-Added Effect in the weapon is just a nice additionata that makes the physical attacks inflict Slow or Stop, rendering them more useful since all that green Materia will weigh your strength down. Alas, putting that on your armour will make you immune to Haste! W-Magic and W-Item emulate the effect of the "Quick" spell (or whatever it's officially called) that's supposed to enable two actions per turn, and Restore-All gives you Regen. Sure it became White Magic in later games, but that's only because the "Time Magic" class was effectively phased out! Bastards! Anyone who's played FF5 will know that Regen started out as a Time spell! Well, not counting FuSoYa's strange command in FF4.
Utterly Humiliate Ruby Weapon : Double Cut (maxed ideally), Restore-Magic Counter, Revive-Final Attack, HP Plus and MP Plus if appropriate
I once beat Ruby with this setup. No, seriously. This setup will keep you alive long enough to toss about 12 Hero Drinks at the proposed solo party member, then you can chip away at its HP for about an hour. Each time you take a hit you'll restore your own HP, and each time you die you'll revive automatically (that shouldn't happen though). I didn't include a reliable way to restore MP because, well... Ruby Weapon eventually runs out when you fight like this. That's the "humiliate" part. By the time you reach this stage in the game you'll have a ton of Turbo Ethers stocked from the many enemies that drop them so just use those.
Now you go.