Huntsman Leopold at Light's Hope Chapel in the Eastern Plaguelands wants 30 Crypt Fiend Parts.
How would you like to earn yourself one of these shiny coins?
<Leopold holds up an insignia of the Crusade.>
I've got a little problem that you might be able to help me with, [player]. You see, I make Cryptstalker armor for those daft enough to venture into Naxxramas. While they supply me with the core material requirements for the armor, I always run out of the crypt fiend parts. Bring me back a bundle of parts and I'll pay you with an insignia - usable at the quartermaster.