Initiation Time: 1 action
Range: 150 feet
Duration: Concentration, up to 1 minute
Until the form ends, blinding air and debris whirl in a 20-foot-tall cylinder with a 40-foot radius centered on a point you choose within range. The area is heavily obscured, and exposed flames in the area are doused. The whirling debris makes the area difficult terrain. When a creature enters the form's area for the first time on a turn or starts its turn there, it must make a Dexterity saving throw. On a failed save, it falls prone.
If a creature is concentrating in the form's area, the creature must make a successful Constitution saving throw against your ki save DC or lose concentration.
As a bonus action on your turn, you can move the storm up to 30 feet within range.