If your earth elemental is 30ft within range, choose a point you can see on the ground within 90ft. Your earth elemental can glide underneath the earth and erupts from that point in a 15-foot cube centered on that point. The earth elemental will then occupy this point. Each creature in that area must make a Dexterity saving throw. A creature takes 3d10 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.
Should your earth elemental die, this spell will disappear from your spell list.
At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d10 for each slot level above 4th.
* - (a piece of obsidian, earth elemental)