Sypha's Frozen Crystals

You create six sharpened icicles in your space. They float in the air in an arc above your head for the spell’s duration. When you cast the spell — and as a bonus action on each of your turns thereafter — you can fire one or two of the icicles, sending them streaking toward creatures or objects you choose within 120 feet of you. For each icicle, make a ranged spell attack against the target. On a hit, the target takes 2d6 cold damage and 1d4 piercing damage, and its speed is halved until the start of your next turn.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the number of icicles created increases by two for each slot level above 3rd.