Chain of the Scarlet Crusade

The Chain of the Scarlet Crusade is a non-class specific mail set.

Source
The set became unobtainable in Mists of Pandaria when the Scarlet Monastery complex was revamped. Although the uncommon pieces of the set have been looted from the Salvage Crates, the BoE rare pieces have yet to make an appearance. The Scarlet Leggings remain unobtainable.