While looking for item data, I was quite happy to find how the
information on monsters is stored (thanks bspbsp), including what items are dropped. I also found a list of items and magic in a
post by Colly.
What I haven't been able to find yet is what items can be refined into what. For example, with the Ammo-RF ability, 1 Normal Ammo can be refined into 1 Fast Ammo, or with the Supt Mag-RF ability 1 Remedy can be refined into 5 Esuna. I'm also interested in what the cards refine into with Quezacotl's Card Mod ability.
Can anyone point me in the right direction?