I went to one of the Brazil servers, and started a DK. Got him to 58, took him to Darnassus, flew him to Felwood, rode over to Minfernal Central™. I saw the best little icon show up on my minimap. I walked over to this cute Minfernal running around. It was the best thing I've ever seen. He was common, but HE'S MINE!
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
There was only one, but that was good enough for me! I'm leaving him camped there so he can continue hunting for a rare, or the upgrade stones come out, whichever is first.
It is fast to level a DK far enough to get out of the zone, and move him to a spawning point. Try this on a couple servers and try your luck!