Crystal of Insanity

Source
This item has a chance to drop from the pandarian champion Sulik'shor in Valley of the Four Winds. It may additionally be found inside any Eerie Crystal in the Cavern of Lost Spirits on Timeless Isle.

Objective of

 * Going To Need A Bigger Bag

Trivia
The flavor text references a famous quote by philosopher Friedrich Nietzsche: "When you stare into the abyss, the abyss stares back into you."