Brightshore

Hilt of this magical weapon is inscribed with a symbol of an inlaid silver moon with an unblinking eye inside it, and the blade seems to shimmer transparently in direct light. In darkness, however, tendrils of wispy shadow coil around the blade and almost seem to consume the darkness to empower itself. This magic sword grants advantage on melee attacks made in dim light or darkness. All melee attacks made in well-lit areas are made at disadvantage.