You create a swirling  sphere of magical wind and fire it off. Target creature within range makes a Dexterity saving throw. On a successful save, the sphere hits a creature for half damage, or on a failure the sphere deals 1d10 bludgeoning damage to its target. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the spell creates one more sphere for each slot level above 1st. You can send the spheres to multiple targets.