Originally Posted by
MysteriousRonin
@Seeker too.
Arcanist is supposed to use Arcane magic, which is a dark type of magic.
"Arcane Magick (裏魔法, Ura Mahō?, lit. "Nether Magic") is a type of magick that deals with direct damage or negative Status Effectes that distort the judgment of either ally or foe. They have been classified in previous Final Fantasy titles as Black Magic, and in Final Fantasy X-2 as the main set of abilities for the Dark Knight, though only labeled as Arcana."
Carbuncle in nearly every FF game uses White Magic and in a few is considered the avatar of Light or the avatar of Holy, but its spells have been WHM based since the beginning making it Light based even back then. It's not just RW either.
Like I said before, I don't think Yoshida or his team know much about the Final Fantasy series because they got so much wrong.