Seismic Shove

You select a point on the ground within range that has a radius of 5 feet. And creatures in this zone must make a Dexterity saving throw, or be pushed 15 feet in any one direction. A willing creature can choose to fail the saving throw. Creatures pushed up take fall damage accordingly, and fall prone.

For every level above 1st, the targets get pushed an additional 10 feet.