Pony Fantasy VI Remake

As far as menu sorting goes, you could add exception to the code I posted in the thread of your second link (ideally right after LDA $3034,Y). I'm confident this won't solve your casting animation problem though.

The first link you posted is about changing a stance of a specific spell, black and white magic have the same stance, it's the casting intro animation that differs between balck and white (and grey?). I'm not sure where the casting intro is decided. The last link you posted is about spell data, it doesn't cover animations.