Sparkstone

When you take the Attack action, you can replace one of your attacks with throwing a Sparkstone. Target one creature or object you can see within 20 feet of yourself. The target must succeed on a Dexterity saving throw (DC 8 plus your Dexterity modifier and Proficiency Bonus) or take 1d6 Lightning damage and it can't make Opportunity Attacks until the start of your next turn.