Acidic Venom Sac

Source
This item drops from:
 * Darkfang Spider in Dustwallow Marsh
 * Darkfang Venomspitter in Dustwallow Marsh
 * Darkfang Lurker in Dustwallow Marsh
 * Giant Darkfang Spider in Dustwallow Marsh
 * Darkfang Creeper in Dustwallow Marsh

Acidic Venom Sac as a quest objective
This item is an objective of.