5 transmog appearances and 1 mount, pet or toy drop in Sethekk Halls.
Belt of the Raven LordLeather Waist
Boots of Righteous FortitudePlate Feet
Greaves of DesolationMail Legs
Talon of AnzuOne-Hand
The BoomstickRangedSign in with Battle.net to see which of these appearances and collectibles you already have, and which of your characters can still loot Anzu this reset.