Here’s a really fun addition to the new patch, as Blizzard have made one of the treasures in Zaralek Cavern only lootable with a particular item from way back in Vanilla!
You may have instantly thought of the item in question as it makes perfect sense, with the Onyxia Scale Cloak still very much protecting against Shadowflame, and that very same flame is blocking a treasure (the Blazing Shadowflame chest, located at 28.8, 47.5) containing the Blazing Shadowflame Cinder. The toy, very appropriately, wreathes you in that same Shadowflame as a cosmetic effect. You can check out the exact location and the visual of the cosmetic effect below:
As reported by tomytronics, all of this has driven the price of the Onyxia cloak up an enormous amount, as it previously cost basically nothing, and is now going for as much as 100,000 gold. The only way to get the recipe is to be a Leatherworker the first time you turn in Onyxia’s head – you can’t get it if your character already turned in the head and wasn’t a LW back then.
So if you have the recipe and some Onyxia Scales, maybe throw some on the AH and make some gold while demand is high!