Basic Splash

You hurl a bubble of base. Choose one or two creatures you can see within range. If you choose two, they must be within 5 feet of each other. A target must succeed on a Dexterity saving throw or take 1d6 acid damage. This spell ignores resistance or immunity to acid damage but is improved by vulnerability to Acid damage. 

This spell’s damage increases by 1d6 for every spell slot above first.