Ambusher's Regret

You release an arcane arrow that traces the path of the triggering attack back to your unseen attacker, provided that attacker is in range. That creature must succeed on a Dexterity saving throw or be outlined in light until the end your your next turn. While outlined in light, the creature sheds bright light in a 10-foot radius and dim light within further 10-foot radius. Any attack against the illuminated creature is made with advantage. The creature cannot benefit from being invisible.