Earth Blast

You summon a small boulder and sending them streaking toward a point you choose within range. Once boulder reaches its destination or impacts a solid surface, it explodes. Each creature within 5 feet of the point where the boulder explodes must make a Dexterity saving
throw. A creature takes 1d6 Bludgeoning damage on a failed saving throw. This spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6, and 17th level (4d6).