Eliotte's Spike Storm

You create six tiny ice spikes in your space. They float in the air and orbit you for the spell’s duration. When you cast the spell — and as a bonus action on each of your turns thereafter — you can expend one or two of the spikes, sending them streaking toward a point or points you choose within 120 feet of you. Once a spike reaches its target, it impales the target on a successful hit, doing 2d6 cold damage. As a reaction to a melee attack, you can expend one or two of the spikes to defend yourself, adding a +1 to AC expending one, and a +2 on expending two.

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