Essence of Agony

Essence of Agony was a poison reagent used by rogues to create poisons that could reduce healing effects, slow casting, or slow movement speed.

Source
Sold by poison vendors

As an ingredient
Essence of Agony was used in the following recipes:


 * Crippling Poison (item) (II)
 * Mind-numbing Poison (item) (III)
 * Wound Poison (item) (III, IV, V)