Chemist's Bubble

You create a bubble of any chosen liquid element under 50 degrees celsius. After level 2, you can begin combining elements. You can throw it at 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 for acid, cold damage for cold things, etc.).

This spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).