Justicar (sword)

Justicar is the powerful longsword wielded by the former god of justice, Tyr. It was gifted to him either by Ao or Tyr's predecessor. Mystra aided in it's creation.

Since Tyr's death fighting off a demonic invasion of Celestia, the sword is stuck in a white stone in the hearth of Martyrdom, Ilmater's Dominion in Celestia.

Abilities
In Faiths and Pantheons, Justicar is depicted as a +5 Vorpal Longsword. Other abilities are unknown.

In Faiths & Avatars it was an unnamed +3 Sword of Sharpness that can detect lies, alignment, invisible things & characters with levels in the Rogue class.