Mass Production. The Dark Iron Dwarf racial that made them craft Blacksmithing things 25% faster as well as giving a small boost to the Skill level.
That is until the last patch...
They nerfed this racial down to 10%, which may not seem like a huge deal to anyone, but it is somewhat to me.
I usually Craft 10-20k Sharpenening stones to sell on the AH, and a Full inventory of 2940 would take 73.5 minutes. (1.5 s a stone x 2940)/ 60
Now a full inventory takes 88.2 minutes.
I dont get why they nerfed this rather inconsequencial racial, much less why they would do it sneaky like, but like what the heck yo.