Serpent blade

The Serpent Blades were enchanted blades wielded by the members of the Cult of Tiamat in the city of Unthalass, Unther.

Description
These weapons were longswords with their blades and hilts made out of emerald-green metal and appeared to be scaled.

History
At one point before the 14 century DR, Elminster Aumar investigated the abhorrent activities of the Cult of Tiamat in Unthalass. He made his way into the dark deity's temple, towards its Altar of Scales, despite the cult's guards "dissuading". They wielded these curious magic weapons.