42 transmog appearances and 3 mount, pet or toy drops across 6 bosses.
Blackfathom WarbandsMail Wrist
Boots of the Shifting NightmareCloth Feet
Brighthelm of JusticePlate Head
FathomstoneHeld In Off-hand
Pauldrons of the WardancerPlate Shoulder
Ranger-General's ChestguardMail Chest
Robe of Hateful EchoesCloth Chest
Shoulderpads of the StrangerLeather Shoulder
Wraps of PurificationCloth Wrist
Boots of Effortless StrikingLeather Feet
Bracers of EradicationPlate Wrist
Cord of Screaming TerrorsCloth Waist
Glowing Breastplate of TruthPlate ChestGrove-Bands of RemulosLeather Wrist
Mallet of the TidesOne-Hand
Tempest-Strider BootsMail FeetVelvet Boots of the GuardianCloth Feet
Coral-Barbed ShoulderpadsMail Shoulder
Fang of the LeviathanOne-Hand
Girdle of the InvulnerablePlate Waist
Orca-Hide BootsLeather Feet
True-Aim Stalker BandsMail Wrist
Bloodsea Brigand's VestLeather Chest
Soul-Strider BootsCloth Feet
World BreakerTwo-Hand
Girdle of the Tidal CallMail Waist
Gnarled Chestpiece of the AncientsLeather Chest
Illidari ShoulderpadsCloth Shoulder
Luminescent Rod of the NaaruRanged
Mantle of the Tireless TrackerMail Shoulder
Pauldrons of the Argent SentinelPlate Shoulder
Razor-Scale BattlecloakCloth Back
Talon of AzsharaOne-Hand
Warboots of ObliterationPlate Feet
Belt of One-Hundred DeathsLeather Waist
Cobra-Lash BootsMail Feet
Fang of VashjOne-Hand
Glorious Gauntlets of CrestfallPlate Hands
Krakken-Heart BreastplatePlate Chest
Lightfathom ScepterOne-Hand
Runetotem's MantleLeather Shoulder
Serpent Spine LongbowRanged
Vestments of the Sea-WitchCloth ChestSign in with Battle.net to see which of these appearances and collectibles you already have, and which of your characters can still loot each boss this reset.