Boneblade

Boneblade was a +4 magical dagger that, while simple in design, had a powerful enchantment. It had a blade of steel and handle carved from the tooth of a black dragon.

History
The boneblade was forged centuries before the Time of Troubles by a duergar smith, and tempered in his blood. As of the year 1369 DR, it was in the possession of a priestess of Lolth in the subterranean city of Ust Natha.