I'm playing the SNES version right now, again, and I ran across some things.

*When Gau and Relm are in your party, and you are on the Veldt, have Gau jump on an opponent. When he comes back have Relm sketch him. My character's stats got switched around and I ended up with 99 Atma Weapons in my inventory.

*Cast Vanish on an enemy, sketch the enemy then run away, items will multiply.

*Back Guard doesn't work against Tyranosaurs

That was it, did anyone else have that happen with their cartridges? I don't care about the PSX remake, only FFIII or FFVI JPN on SNES.