A swirling ball of compressed wind forms in your hand. Make a ranged spell attack as the ball expands as it moves through the air. On a hit, a 40 foot radius sphere of swiftly swirling wind restrains the target and anyone within the radius. Any creature restrained by this spell must make a Constitution saving throw upon being restrained, and at the end of each of their turns as long as they remain in the sphere. On a failure, targets take 12d4 slashing damage, half damage upon a success.
On their turns, any creature restrained by the spell can make a Strength check against your spell save DC. On a success, the target is able to move in an attempt to leave the spell's area. The area of swirling winds is difficult terrain and heavily obscured.
If the spell is maintained throughout the whole duration, any inanimate objects in the spell area, including the ground, are shredded into coarse dust.