Looted from the remains of Lamae Bal during the quest 'The Blood Matron'. Another can be obtained during the 'true' ending of Vigilant Chapter Four, during Marukh's memory.
Requires Vigilant. The latest update features "Weapon Arts", unique powers available while the weapon is equipped. for select weapons added by Vigilant. The Bard's Dagger bestows the "Too Late Blessing", sacrificing 200 magicka to cure all diseases.