C'Thun
Found in Ahn'Qiraj Temple.
Item Count Chance 
Base of Atiesh quest1 100% 
Carapace of the Old God1 100% 
Husk of the Old God1 100% 
Eye of C'Thun1 100% 
Gauntlets of Annihilation1 21.0% 
Grasp of the Old God1 21.0% 
Cloak of Clarity1 21.0% 
Mark of C'Thun1 21.0% 
Dark Storm Gauntlets1 18.4% 
Belt of Never-ending Agony1 18.4% 
Ring of the Godslayer1 18.4% 
Eyestalk Waist Cord1 18.4% 
Cloak of the Devoured1 18.4% 
Vanquished Tentacle of C'Thun1 15.0% 
Death's Sting1 8.00% 
Dark Edge of Insanity1 8.00% 
Scepter of the False Prophet1 8.00% Zone Spawns Coordinates Ahn'Qiraj Temple 1 instance