OCTGN uses an Apprentice Variant where, if I understand it correctly, you use the full mage stats (full health, channeling, and special abilities) and build them a 60 point spellbook with a maximum of 2 copies of any particular spell. Then you play on a 3x3 arena. This gives you enough room to utilize conjurations yet still keep the game pretty brutally in each other's face.
If you wanted to go this route, you could build your own books or I could post the OCTGN prebuilt ones for you here. They have one for every mage up to and including the Forged in Fire mages, so just tell me which ones you're interested in. I can't comment on how balanced they are since I haven't actually used them. I would still increase the arena to 4x4 though methinks.
So what if I'm the wizard person too my left is priestess in front of me a warlock and too my right a bestmaster. The warlock would win every single time!
I didn't say you couldn't attack people other than the person on your left. That's just who has to die for you to win. If someone sees a mage other than their target getting the snot beat out of them, they should step in to try to keep them alive longer than their target. For instance, the Priestess might start using creatures to guard the Beastmaster or throw a heal his way, while the Wizard may Dispel an evil curse off of him. This format can actually be extremely dynamic since you don't really want to help each other out, but you need them to stay alive until you can kill your main adversary.