Bow of Light (5e Equipment)
From D&D Wiki
Weapon (longbow), uncommon (requires attunement by a lawful good or neutral good character)
A ornately carved cedar bow ordained with depictions of benevolent gods giving to their creations.
The Bow of Light has 6 charges. When you hit a creature with an arrow fired from this bow, you can expend a charge to have the attack deal an additional 1d6 radiant damage. The bow regains 1d4 + 2 charges daily at dawn.
When you fire an arrow, you can also choose to make it shed bright light in a 20-foot radius and dim light for an additional 20 feet until the start of your next turn.