Ability hex edit Nightshade

[superduper]

Hey there,

Is it possible to mod nightshade to have ''Ultima Sword'' as one of its abilities ? since it is a bangaa ability, I also need to find a way to use ultima sword as Humes.(since nightshade is a hume job)

one idea I had is to compare the hex values between a normal FFTA2 rom with the redesigned rom mod( since the guy removed all ohko skills) to find the differences. Still, I couldnt find any value :/

Can someone help me please