Elemental Evil Player's Companion , pg. 155
Erupting Earth
3-level
Transmutation
Casting Time 1 Action
Range 120 ft (20 ft)
Duration Instantaneous
Components V, S, M
Materials A piece of obsidian.
Damage Type: Bludgeoning
Saving Throws: Dexterity
Description: Choose a point you can see on the ground within range. A fountain of churned earth and stone erupts in a 20-foot cube centered on that point. Each creature in that area must make a Dexterity saving throw. A creature takes 3d12 bludgeoning damage on a failed save, or half as much damage on a successful one. 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: Choose a point you can see on the ground within range. A fountain of churned earth and stone erupts in a 20-foot cube centered on that point. Each creature in that area must make a Dexterity saving throw. A creature takes 3d12 bludgeoning damage on a failed save, or half as much damage on a successful one. 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.
Class(es): Druid, Sorcerer, Wizard