Waterwheel

You create a ring of flowing water around yourself. Upon casting and as a bonus action on subsequent turns, you can fling two shards of ice at up to two targets within 60 feet. Make a ranged spell attack. On a hit, the target takes 2d6 cold damage and 1d4 piercing damage. 

At higher levels: When cast using a spell slot of 3rd level or higher, the cold damage increases by 1d6 for each spell slot above 2nd.