Anime RPG has many different magic systems, all of which have their own advantages and disadvantages.
The first is the classic fantasy fiction style of magic. This system makes generic mages, with no innate advantages or disadvantages in different aspects.
The second is a more video game style magic. This sytem uses the White/Red/Black magic thesis and tends to elicit more roelplaying then the first.
The third is divine, or clerical, magic. This can be a tricky subject, since religions differ from person to person, and this system uses everything from a mono-theistic god to demonology.
The fourth is elemental magic. This system creates mages that draw elemental effects from the environment around them, and tends to have the most enjoyable mages.