Using the magma that forms your own body and the magic of the Dark Powers, choose a point within range that is solid ground. As you slam your fist in the ground, a miniature volcano that swirls with necrotic energy rises from the chosen point. Creatures in a 15 ft radius must make a Dexterity saving throw. On a failure, creatures suffer 2d8 fire damage, 2d6 bludgeoning damage and 2d6 necrotic 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 3rd level or higher, increase the fire damage by 1d8 the bludgeoning damage by 1d6 and the necrotic damage by 1d6 for each slot level over 2nd.