Very Rare Weapon (Hand Crossbow), Light, Loading, Range (30/120), Requires Attunement

Unseen Sense.  Once per long rest, you can use your bonus action to activate this feature for 8 hours. While it is active, a gem on the weapon starts emitting shedding dim light in a 5-foot radius while you are within 30 feet of an invisible creature.

Seeing Bolt (Recharge 5-6). You can use your Attack Action to make this Special ranged Attack. If you are able to make multiple Attacks with the Attack Action, this Attack replaces one of them.
You shoot out a magical seeing bolt into the air that will target the nearest invisible creature or object within range of the weapon. You make a ranged Attack using Unveiler’s Crossbow and with a +10 bonus on your attack roll against that target. If the Attack hits, it deals extra 2d10 force damage and outlines the target’s shape for 1 minute, making them unable to gain any benefits from being invisible.Strike More True. You can use your action to gain a +10 bonus on your next weapon attack roll made within the next minute, and make it deal extra 1d10 force damage.