Acidic Icicle

You create a green acidic icicle and throw it at one creature within range. Ranged spell attack against the target. On a hit, the target takes 1d10 piercing dmg. The icicle explodes on contact with anything. The target and all creatures within 6 feet of it must succeed on a Dexterity saving throw or take 2d6 Acidic damage over 2 rounds. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the acidic damage increases by 1d6 for each slot level above 1st.