Eruption

Choose a point within range that is solid ground. As you raise your fist in the air, a miniature volcano rises from the chosen point. Creatures in a 15 ft radius must make a Dexterity saving throw. On a failure, creatures suffer 5d6 fire damage and 5d6 bludgeoning damage or half as much on a success. The volcano becomes difficult terrain for 1 minute before it sinks back into the earth.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, increase the fire damage by 1d6 and the bludgeoning damage by 1d6 for each slot level over 4th.