Earth Spike

Call upon the earth beneath you. In a row with the width of 5 feet, forcefully rip out all stones below the area. Any target in the area has to make a dexterity saving throw DC 15 or take 4d6 bludgeoning damage. They take half the damage if they fail.

The area is now considered difficult terrain.

If the spell is cast on the same area again, the damage dealt will be doubled.