26 transmog appearances across 4 bosses.
Cloak of Scintillating AurasCloth Back
Gloves of the UnboundLeather Hands
Hood of OblivionCloth Head
Mana-Sphere ShoulderguardsCloth Shoulder
Outland StridersMail Feet
Rubium War-GirdlePlate Waist
Helm of AssassinationLeather Head
Hungering SpineripperOne-Hand
Lamp of Peaceful ReposeHeld In Off-hand
Nether Core's Control RodRangedOutland StridersMail Feet
Reflex BladesOne-Hand
Thatia's Self-Correcting GauntletsPlate Hands
Doomplate ChestguardPlate Chest
Emberhawk CrossbowRanged
Hallowed CrownCloth Head
The Sleeper's CordLeather Waist
Warmaul of Infused LightTwo-Hand
Worldfire ChestguardMail Chest
Belt of DepravityCloth Waist
Bracers of DignityPlate WristBreastplate of the BoldPlate Chest
Lamp of Peaceful RadianceHeld In Off-hand
Shadowstep StridersLeather Feet
Sigil-Laced BootsCloth Feet
Tidefury ChestpieceMail Chest
Vileblade of the BetrayerOne-HandSign 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.