I was leveling up some alts in Dawnshroud Peaks and I killed this Zelniak (KOS) and to my surprise it dropped not just 1 or 2 items but 9 and all quest items it seems:
Runed Ring of Air
Bracelet of Friendship
Tarnished Gold Nugget
Talisman of Wind
Vial of the Morning Mist
Air Etched Wand
Talisman of Moisture
Priceless Book
Mark of Fortune