The Eye of Aghbar was a magical artifact that granted the wearer immunity to the magic of witches, including active powers and potions.
History
An Arabian thief gave Bosk the Eye when he left to retrieve Jinny in the genie's bottle. The talisman protected Bosk from Piper Halliwell's combustion power and a potion meant to vanquish him. The talisman was destroyed when Bosk was vanquished by with a fireball.[1]