Earthern Spike

Slamming your palm on the ground, you send shockwaves out to concentrate on a point you see within 30 ft. This energy then causes a large stone spike to shoot up from the ground. Creatures within range must make a dexterity saving throw. A creature takes 2d6 bludgeoning damage and is knocked prone on a failed save, or half as much on a successful save. Additionally, the ground in that area becomes difficult terrain until cleared. The area requires at least 1 minute to clear by hand.

 At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.