One of the cooler things about playing a shadow priest is shadowform. This nifty talent specc, part of the shadow tree, grants 15% damage increase for shadow spells, 15% decrease in physical damage taken, and the only liability is it prohibits the casting of holy spells.
Pffft, like I was going to heal people anyway.
Shadowform also changes the priest's physical appearance. As the talent hints, you turn a purple transparent color with shadowy tendrils coiling out and around you. It's pretty cool.
For the few months or so.
But then you start scoring some phat lewtz while raiding and suddenly you realize you can't actually see any of your new gear. Once you pop shadowform, you're nothing but a purple blob. And I've seen that already. A lot. So I'm hoping maybe Blizz could be convinced to include some sort of check box that allows you to have shadowform up without actually turning you shadowy, much like headgear and cloaks. If they refuse, than I'm doomed to look just like ever other 40+ level shadow priest.