Tome of Ancient Madness

The Tomes of Ancient Madness drop from the following mobs in the Vale of Eternal Blossoms:
 * Drowned Zealot
 * Tidal Corruptor
 * Drowned Adherent
 * Brother Meller
 * The Forgotten
 * Deeplord Zrihj
 * Voidtender Malketh

Objective of

 * Tomes of Ancient Madness