Ice Knife

Make a ranged spell attack against one creature.
On a hit, the target takes 1d10 piercing damage.
Hit or miss, the shard then explodes. The target
and each creature within 5 feet of it must succeed
on a Dexterity saving throw or take 2d6 cold
damage.
At Higher Levels. When you cast this spell using a
spell slot of 2nd level or higher, the cold damage
increases by 1d6 for each slot level above 1st.