Eye of the druuthbane

An eye of the druuthbane was a magical item designed to expose and thwart a druuth—a band of doppelgangers in the service of a mind flayer.
==Description==
It was a yellow crystal about as big as a human fist. It weighed .
==Powers==
An eye of the druuthbane had a variety of powers dedicating to foiling the powers of doppelgangers and illithids. First, if a doppelganger was within , it glowed red; if an illithid was within , it glowed blue; and if both were , it glowed violet.
Second, when grasped in one's hand, it bolstered the bearer's mental defenses and force of will.
Third, it could be used once a day to fire a red beam at a creature that, if it was a doppelganger, would be forced to return to its true form for up to half a minute if it couldn't resist.
==History==
The first eye of the druuthbane was fashioned by a wizard who battled a powerful druuth. It was once exclusively associated with Waterdeep.
After that time, it was copied and spread far and wide to oppose other druuth.
==Creation==
Creating an eye of the druuthbane required the spells resistance, detect thoughts, and polymorph other. One was valued at 18,000 gp.
==Appendix==
===References===
Category:Magic items
Category:Items from Waterdeep
Category:Items from the Sword Coast North
Category:Items from Northwest Faerûn
Category:Items from Faerûn
Category:Items from Toril
Category:15000-19999 gold pieces