5 transmog appearances in Blackrock Caverns.
Groundrumble BootsPlate Feet
Inquisition RobesCloth Chest
Manacles of PainMail Wrist
Torturer's MercyOne-HandSign in with Battle.net to see which of these appearances and collectibles you already have, and which of your characters can still loot Rom'ogg Bonecrusher this reset.