As a Bonus Action, you can create a 10-foot Emanation of twisting wind originating from you. The Emanation lasts for 1 minute, until you have the Incapacitated condition, or you dismiss it (no action required). Once you use this feature, you can't use it again until you finish a Short or Long Rest. You can also restore your use of it by expending a level 2+ spell slot (no action required). The Emanation has the following effects.
Difficult Terrain
The Emanation is Difficult Terrain for creatures you choose.
Disadvantage for Ranged Attacks
Ranged attacks through the Emanation have Disadvantage. Heavy projectiles, such as boulders and ballista bolts, are unaffected.
Disperse Gasses
The Emanation disperses gasses and vapor within its area.
Windswept
Small or smaller flying creatures can't move through the Emanation.