[busyrobot]

Most fantasy games/movies/stories use a simple philosophy:
White Magic/Black Magic, you got our Force and it's Dark Side, all in all is usually where you have

1) White Magic, tuning into maagicaal powers and unraveling the mysteries of the elements, yada yada, to do really powerful stuff.

2) Black Magic, tapping raw power, controlling/will bending of spirits, demons, the undead, etc, doing freaky powerful stuff.

One is the zen-like 'becoming one with power' and the second is 'bending and controlling power' to one's will. It's like you cannot play a 'good guy' who owns slaves, it's contradictary to the philosophy.

In graal, it seems, as per the game is set up, white magic is god given, black magic is wizardry, but that they are titles and don't effect character's alignment and aren't meant to. So, it's understandble where people have every reason to think black wizards are evil, but it's a game and people can really play what they want how they want.