13 transmog appearances and 1 mount, pet or toy drop in Blackwing Lair.
Bindings of TranscendenceCloth Wrist
Bloodfang BracersLeather Wrist
Bracelets of WrathPlate Wrist
Bracers of Ten StormsMail Wrist
Dragonstalker's BracersMail Wrist
Gloves of Rapid EvolutionCloth Hands
Judgment BindingsPlate Wrist
Mantle of the Blackwing CabalCloth Shoulder
Nemesis BracersCloth WristNetherwind BindingsCloth Wrist
SpineshatterOne-Hand
Stormrage BracersLeather Wrist
The Untamed BladeTwo-HandSign in with Battle.net to see which of these appearances and collectibles you already have, and which of your characters can still loot Razorgore the Untamed this reset.