Earth Reaver

With a stern, commanding word, you point at a spot on the ground. An instant later, the earth at the indicated spot erupts in a shower of rock, dirt, and fire. Each creature in a 20-foot-radius sphere centered on that point takes 3d6 fire damage and 4d6 thunder damage and must make a Dexterity saving throw. On a failed save, a creature is knocked prone. A nonmagical object that isn’t being worn or carried also takes the damage if it’s in the spell’s area.

At Higher Levels. The fire and thunder damage increases by 1d6 for each two-slot levels above 5th.