Cho'Rush the Observer
Found in Dire Maul.
Item Count Chance 
Ogre Warbeads quest2-3 50.0% 
Mana Channeling Wand1 25.0% 
Cho'Rush's Blade1 25.0% 
Observer's Shield1 25.0% 
Insightful Hood1 25.0% 
Runecloth2-4 25.0% 
Libram of Rapidity1 2.00% 
Libram of Focus1 2.00% 
Libram of Protection1 2.00% 
Happy Fun Rock1 2.00% Foror's Compendium of Dragon Slaying1 0.2% 
Garona: A Study on Stealth and Treachery1 0.2% 
Codex of Defense1 0.2% 
The Arcanist's Cookbook1 0.2% The Light and How to Swing It1 0.2% 
Harnessing Shadows1 0.2% The Greatest Race of Hunters1 0.2% 
Holy Bologna: What the Light Won't Tell You1 0.2% Frost Shock and You1 0.2% 
The Emerald Dream1 0.2% Zone Spawns Coordinates Dire Maul 1 instance