Osseous Agitator

Source
This item drops from the following in Western Plaguelands, provided you have the Vitreous Focuser in your bags:


 * Araj the Summoner
 * Skeletal Sorcerer
 * Skeletal Flayer


 * Skeletal Executioner
 * Skeletal Warlord
 * Wandering Skeleton
 * Skeletal Acolyte
 * Skeletal Terror
 * Cauldron Lord Razarch
 * Cauldron Lord Malvinious

As a quest objective

 * Felstone Field Cauldron used at the Scourge Cauldron on the Felstone Field in the Western Plaguelands.