Bone Spikes

Choose a point on the ground that you can see within range. At your command, cultrate bones shoot up in a 10-foot square centered on that point. Each creature in the area when you cast the spell must succeed on a Dexterity saving throw or take 1d6 piercing damage. The area is difficult terrain until the start of your next turn.

The spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).