I found out last night, going through the WoW forums, that there's a secret mog item we can get by collecting an item in stage 6 (easier to get in stage 7 though because you can just go back to the area and the mobs are all dead so nothing to get in your way) of the Broken Shores scenario from an altar. Rather than type everything and repeat what others have already written I'll just link the sources that showed me the way:
1. Simple to follow 3 minute youtube video:
2. The WoW Forums thread that first informed me about this item:
3. What the item looks like on WoWhead.com:
There ya go.. just follow the instructions and the mog item is yours!