Class concept, too annoying or the right hint of interesting? Typically when a Red Mage or Sage exists possessing the powers of both White and Black magic, the class is tragically nerfed in effectiveness for the sake of balance. Never quite the master of magic a purist can become. But the Bipolar Mage has manic-driven behavior on his side and obsessively masters both at once! Granted, he's not exactly mentally stable anymore... When the Bipolar Mage casts a spell, he is locked out of that spell until he casts the polar opposite magic. This means casting Slow bans Slow from being cast again until Haste has been cast. Once Haste is cast, it cannot be used again until Slow is repeated. The same goes for Fire and Ice, Light and Dark, Buffs and Debuffs, Curse and Cure, and a slew of other potent spells that ordinary mages must segregate into schools to keep from being a walking powerhouse Elminster clone. This is meant for a game with unusual character classes and limited number of them, so the characters are more flexible in the the scope of their abilities. I did not just want to mesh the two schools together and call it a day.