10 transmog appearances in The Bastion of Twilight.
Belt of the Fallen BroodLeather Waist
Bindings of Bleak BetrayalPlate Wrist
Boots of Az'galadaMail Feet
Bracers of the Dark MotherCloth Wrist
Bracers of the Mat'redorPlate Wrist
Crown of the Twilight QueenCloth Head
Nightmare Rider's BootsLeather Feet
Shroud of Endless GriefCloth Back
Twilight Scale LeggingsMail Legs
War-Torn CrushersPlate FeetSign in with Battle.net to see which of these appearances and collectibles you already have, and which of your characters can still loot Sinestra this reset.