Vacuum

With a sweeping arm gesture, you expel all oxygen from a 20-foot, by 20-foot, by 20-foot cube centered on a point you can see. That point is a true vacuum. Within the cube, all clouds, fogs, and vapors are dissipated, and all fires are extinguished. Performing the verbal components of spells is impossible within the cube. Unsecured objects in the cube are propelled toward the center, potentially harming those within it. On subsequent turns, you can move the location of this cube up to 10 ft. as an action.

Each creature in the area, or which begins its turn in the area, must make a Dexterity saving throw as the vacuum attempts to suck them toward the center. On a failed save, the creature is pulled 10-feet toward the center of the vacuum, potentially dealing/receiving damage as it hits other creatures or objects.

Each creature in the area, or which begins its turn in the area, must make a Constitution saving throw as all the oxygen is pulled from their bodies. On a failed save, the creature receives 2d6 force damage for every 5-feet it is away from the border and closer to the center. (For instance, a creature 20-feet from the center will receive 2d6 force damage. A creature 15-feet away will receive 4d6 force damage. And a creature within 5-feet of the center will receive 10d6.) On a successful save, the creature takes half as much damage.

At Higher Levels. When you cast this spell using a spell slot of 8th level or higher, the base damage increases by 1d6 for each slot level above 7th.