10 transmog appearances in Temple of Ahn'Qiraj.
Belt of Never-Ending AgonyLeather Waist
Cloak of ClarityCloth Back
Cloak of the DevouredCloth Back
Dark Edge of InsanityTwo-Hand
Dark Storm GauntletsCloth Hands
Death's StingOne-Hand
Eyestalk Waist CordCloth Waist
Gauntlets of AnnihilationPlate Hands
Grasp of the Old GodCloth Waist
Scepter of the False ProphetOne-HandSign in with Battle.net to see which of these appearances and collectibles you already have, and which of your characters can still loot C'Thun this reset.