Grimoire of Corruption

Source
This item drops from:
 * Moam in Ruins of Ahn'Qiraj
 * Ossirian the Unscarred in Ruins of Ahn'Qiraj
 * Kurinnaxx in Ruins of Ahn'Qiraj
 * Ayamiss the Hunter in Ruins of Ahn'Qiraj
 * Buru the Gorger in Ruins of Ahn'Qiraj
 * General Rajaxx in Ruins of Ahn'Qiraj