Acid

Source: D&D 5.2 SRD Equipment

Cost: 25 GP

When you take the Attack action, you can replace one of your attacks with throwing a vial of Acid. 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 2d6 Acid damage.