Attaching mor than one materia on a single item will carry the posibility of destroy item/materia/catalist
I'm just nitpicking, but could this be reworded to:

"'Forbidden Materia' crafting for attaching 5 pieces of materia at a time. Failure will result in the loss of the item, materia and catalyst."


While I doubt it will matter to many people, reading over the point seemed like it could vaguely suggest that with 5 materia on it the item could break at any point. I'd just rather not have any confusion if someone didn't know this already. ^^

Great list overall, thanks for posting it!