Call Tempest

A massive air current appears in an area of your choosing. All creatures in a 70 foot long, 30 foot wide line extending from the user must make a Strength save- upon a failed save, they take 2d6 force damage, or half on a successful save, and are pushed backwards by 15 feet. The current stays until the spell ends, and each creature within its area must make another Strength save at the start of each of their turns, or suffer its effects once again.

At Higher Levels. When you cast this spell using a spell slot of 4th or higher level, the damage increases by 1d6 for each slot level above 3rd.