Feldon 
From Chris “Chrol” Garlick on the EQ2 Forums:
Timed treasure hunts return for GU100 – this time in Zek, the Scourge Wastes! Search the solo version of the Wastes for the solo level timed treasure hunts, or bring friends to the heroic wastes and take your chances with the heroic level timed treasure hunts. But be forewarned – the heroic versions of these quests are tough, and time won’t be on your side!
You’ll be rewarded for your efforts! Completing the heroic level timed treasure hunts grants a dirty key that has a chance of rewarding a more valuable key when cleaned. And what do these valuable keys open? Why, treasure chests of course! These all new valuable keys open a new set of treasure chests scattered throughout the Wastes. So get out there, collect those keys, and find your treasure – there’s no time to Waste!
Will the heroic versions give a key to everyone in the group or will we have to roll on it?
I got so tired of doing these and not getting any umbrite keys. I think I’ll cry when I start to do them again. Never did get that darn wand!