Hi,
I hope that's not a repost.
Look, their is some mobs in Durotar in the cavern you can see on the screen below, each time you kill one of them you got a stack (you need to be next to him when he die), once you gathered 5 stacks you got 3% health regen / sec and 25% crit chance for 1 minutes.
just ask for a summon, then kill 5 of them and accept it, could be usefull for WoL or maybe First kill MoP on your realm =)
Enjoy.
Attachment 9796
http://data.imagup.com/11/1160918503.jpg
img take a while to load, don't give up ^^
Link WowHead asap (down atm)