Quote Originally Posted by Lacuna Caster View Post
Yes, except that this isn't a universe where you get more skilled by studying things. You mostly get more skilled by going out and impaling monsters on pieces of sharp metal, then imbibing their sweet, sweet life essence XP. Using ennervation, wail of the banshee or create undead for the purpose is really just a different flavour of frosting on the cake.

I don't think it's even the flavour of magic that's the problem, since the ghost-martyrs are, well, essentially undead. (I know there's the usual positive/negative energy gibberish in the way, but that's like arguing over AC/DC electrical current as if it were an ethics question.)
Actually if youre a wizard, you do have to study spells to learn them. While it isn't said word for word, the Giant heavily implied that Tsukiko was a necromancer wizard, and that he accidentally broke the rules making her.