There's a contested ring event not too deep in MM, and I think that name drops the class legs. The only thing I can offer is the room had a pool/water in it. I really cant explain how to get there, as I've been in that room only once.
We killed all the sentrys (big armored guys) around the room, a gargoyle in the middle back, and then the named poped. He dropped the rogue class legs if I remember correctly (double dealing?) and I'll assume he can drop the legs for every class.