Wow, that is amazing... could you do that with Cid's Venus Gospel and Highwind? I believe both deliver 30 attacks.

The only problem with your setup is that you miss out on the 50000 AP Emerald has to offer! 50000! Aye!

I was thinking small scale nifty materia combos, like...

Added Effect - Hades: for weapons
HP Absorb - Knights: only decent way to use HP absorb
Final Attack - Phoenix: for obvious reasons
Steal as well - Steal: two chances to steal for the price of one

I've never really relied on materia combos to get me through the game, and all the good ones require a ridiculous amount of mastered materia, which I don't have the time or patience to do.