Purifier's Blade (5e Equipment)

Weapon (Claymore), Rare (requires attunement by a neutral creature)

A well worn silver blade, if still incredibly sharp. When listening closely, it hums quietly. You deal an extra 1d4 force damage when hitting with this weapon.

When you hit an abberation, celestial, elemental, fey, or fiend, they must make a DC 16 Charisma saving throw or be frightened of you for the next minute. At the start of their turn, they can reattempt the saving throw, ending this on a success.