Holy Lanternflail

Weapon (flail), rare (requires attunement)

This magical flail has a glowing blue lantern at the end of it, which gives off blue bright light for 20 feet, and blue dim light for another 20 feet. As a bonus action, you can cover the lantern's light, or reveal its light once more. When you hit a fiend or undead with this flail while its light is revealed, you deal an additional 1d8 radiant damage.

Warding Lantern. As an action, you can cause the lantern to glow exceptionally bright, warding off spirits. When you do so, all celestials, elementals, fey, fiends, and undead within 20 feet of you must make a DC 15 Constitution saving throw. On a failed saving throw, a creature takes 2d8 radiant damage, and is moved to the nearest unoccupied space further than 20 feet away from you. This also suppresses magical darkness within the range of the lantern's light until the start of your next turn.