Radiant War Pick

This silver and golden weapon is wrapped in fragments of holy vestments and glimmers spectacularly in sun and moonlight. You gain a +1 bonus to attack and damage rolls made with this magic weapon. When you hit with an attack using this war pick, the target takes an extra 1d8 radiant damage. If the target is a shapechanger or undead, this radiant damage is maximized. In addition, while holding the war pick, you can use an action to expend a use of your Channel Divinity to cast the moonbeam (6th-level version) or sunbeam spell from it (save DC 16). Once this property of the weapon has been used, it can't be used again until the next dawn. You can use an action to speak the war pick's command word to cause it to shed bright light in a 20-foot radius and dim light for an additional 20 feet. Speaking the command word again puts out the light.

Proficiency: martial, war pick Source: The Griffon's Saddlebag: Book Two p. 142 (Third Party)