Bugger. Wizard of Earthsea? Wheel of Time? Dune(it's not exactly magic, but the Bene Gesserit, Fremen and Mentats pack a lot of bullshit)? Lensmen for psychic powers?
I'm pretty sure Stormbringer is already around, but it's very much not nice stuff.
Honestly I think the GM is being a bit overly generous with the write-ins, and it's preventing people from coming to a consensus on some things. He should probably keep the fictional magic to things he's willing to offer, just to keep things contained and not make them unreasonable.
Regarding Wheel of Time, the first two books are out and the third would be out in October, though it should be kept in mind that the main character doesn't really learn much control in those books, and the One Power is still tainted for men so that might be a problem. We couldn't use the female half either, being male.
As you finish folding the paper crane you hold it up with a zen smile, emerald eyes looking toward the inhuman form of Voldemort.
"Potter. What is that? Why are you wasting my time with this?"
Setting the crane aside you offer Voldemort another smile as you reach for another square of paper. You think that, this time, you will make a panda.
A fold here, a wet fold there...
"Potter! Answer me! Why are you doing this? We are supposed to be having our grand, climactic battle!"
Ignoring the shrill voice screaming at you you continue with your paper folding.
Hours pass, and you soon have a small pile of paper animals, and one paper dresser, complete with drawers. You've had to dodge a few killing curses, but it was worth it. It was all worth it.
Holding up your newest creation, a paper cat, you finally speak. "Activate: [Death by a thousand papercuts.]"
And the pile begins to move...
Please, the Gamer would have all that pre-prepared and in his inventory already.