Ilbratha

Ilbratha is an enchanted short sword +1. The weapon inflicts 1d6 +1 points of piercing damage, it has +1 bonus to THACO. The weapon has a speed factor of 2 and a weight of 2 lbs. The sword can be used once per day to cast the spell Mirror Image. This item appears in Baldur's Gate II: Shadows of Amn and this item will probably appear in Baldur's Gate II: Enhanced Edition. Jermien will give Ilbratha as a reward at the end of Find Mimic's Blood for Jermien the Cowled Wizard.

In-game description
"Ilbratha, Short Sword + 1 This ancient bronze sword is set with six matching bloodstones, and was apparently forged for Azoun the First, a long dead king of Cormyr. It saw little use, and eventually found its way to a favored of the king's guards. Despite the aid of its illusionary magic, that unnamed soldier fell in a later battle, and the sword was lost to brigands or scavengers."