Wind ball

A large ball of wind to a point you choose within range and then blossoms with a low roar into a forceful gust of wind. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 4d6 force damage on a failed save, or half as much damage on a successful one.

Upon contact the ball explodes, all creatures within a 20ft radius must roll a strength saving throw, if they succeed nothing happens, if they fail they get pushed. the force of the push scales on dmg with each 2 dmg being 5ft. In addition a wind current is created in a 30ft radius, meaning that every turn a creature must make a strength saving throw of 10 or higher or have disadvantage on melee strikes. In the wind current, if a creature with flying speed is present, then that creatures flying speed is decreased by 10ft.

At Higher Levels. When you cast this spell using a spell slot of 3th level or higher, the damage increases by 1d6 for each slot level above 2rd.