A large serpent made of clay, mud, and rock spawns from the ground at your feet and lunges forward in a 30ft long and 5ft wide line in a direction of your choosing. Each creature in the line must make a Strength saving throw. A creature takes 5d6 bludgeoning damage and is knocked prone on a failed save, or half as much damage and is not knocked prone on a success. Additionally, the ground in that area becomes difficult terrain until cleared. Each 5-foot-square portion of the area requires at least 1 minute to clear by hand.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.