FF5, the berserk combo + earth wall works (can beat the boss at level 5, just takes forever (use turbo mode)).

Lionheart is very rare though - even with Squall on 1/9999HP + aura + a number of bad statuses + all other members dead, you only get 25% chance of getting it.  I just Angel Wing + Meteor - kills things pretty quickly with 70k+ damage per turn from a single character (which you don't even have to worry about).


Ahh, savestate hacking - you can do all sorts of cool stuff with that...