Mists of Pandaria has a few rare mobs that drop epic BoE’s. Most are in Krasarang Wilds and most drop leg slot gear. Scritch is also very good as you can get the Hozen Peace Pipe from him. The best way to farm them is to occasionally check if they’re up and kill them all in the order listed below. That way you basically just fly through Krasarang Wilds with a short visit to Townlong Steppes, The Jade Forest and Kun-Lai Summit
Chilled to the Bone, Dampened Magic, Kleptomania, Netherwind Armor, Prismatic Cloak, and Temporal Shield have limited use in PvE content in terms of increasing your damage in the open world, but they can be situationally useful. Notably Temporal Shield can be utilized for, functionally, an extra 6 seconds of combat time against large elite mobs.