Funny thing is saikou with black mages we just vanished and because our spells were so destructive it was outlawed no one was even allowed to say the word black mage and today everyone considers them heretics. Considering the fact in the class story the void wants to claim and corrupt black mages and we mess with it all the time with blood offerings.

Guess what we became? I am thinking along the main story here. Since even the person who made you one still does not know the reason why they vanished.