Call Quake

The earth tremors beneath the feet of creatures that you choose. Choose an area that you can see within range- a 30-foot circle appears, shaking any solid terrain below it. Each creature standing in its range must make a Strength save, taking 2d8 damage on a failed save and being knocked prone. On each of your turns until the spell ends, you can use your action to make the earth quake again in an area in range.

At Higher Levels. When you cast this spell using a spell slot of 4th or higher level, the damage increases by 1d8 for each slot level above 3rd.