Each week Arcane Brilliance drops at a 100% rate from your computer screen. It can be equipped in any slot, and doesn't bind to your character in any way, shape or form. It can be disenchanted into whatever you want, and sells to merchants for a million gold. It is of legendary quality. When equipped, it raises all of your stats exponentially, to the power of awesome. It also has an on-use ability with no cooldown: Arcane Brilliance instantly turns any targetted Warlock into a ridable mount.
I have to begin by admitting my deep bias here. Since midway through The Burning Crusade I've been a deep Arcane Mage. I loved the Arcane tree when it was bad, and I love it now that it's good. It's entirely possible that this fact disqualifies me from even speaking rationally about this topic, but I've never let a crippling lack of impartiality stop me before.
Even those who now hate this spec and cry loudly (and as frequently as the refresh button on their internet browsers will allow) for massive and immediate nerfs will agree that there has never been a better time to be an Arcane Mage. Already quite powerful in PvP and fairly solid in PvE, patch 3.0.8 has only increased the effectiveness of this formidable spec. Playing an Arcane Mage is easy to pick up and challenging to master, and more out-and-out fun than it has any right to be. Follow me after the break and we'll discuss some of the ins and outs of this very potent school of magic.