Angelic Summon

You can use an action to speak this spear's command word, summoning a guardian angel to smite a foe within 60 feet of you that you can see. The target must make a DC15 Dexterity saving throw. The target takes 4d6 radiant damage on a failed save, or half as much damage on a successful save. The angel disappears after delivering it's strike. The property can't be used again until the next dawn.