Orb of Illusion

Source
Orbs of Illusion drop from Bitter Initiates at Aldur'thar in Icecrown.

As a quest objective
This item is used on Dark Subjugators for the following quests:
 * Drag and Drop (Alliance)
 * Drag and Drop (Alliance daily)
 * Drag and Drop (Horde)
 * Drag and Drop (Horde daily)