Volcanic Eruption

The ground ruptures at a point within range and lava explodes from it, both pooling onto the ground and also ejecting red hot rocks into the air in a 30' radius and 50' high cylinder. The cylinder remains for the spell's duration. Each creature in the cylinder when it appears or that ends its turn there must succeed on a Dexterity saving throw or take 6d6 fire damage on a failed save, or half that on a successful save. The lava spreads around corners, and for the duration the cylinder's space is difficult terrain. Flammable objects not being worn or carried are ignited.

Until the spell ends you can use a bonus action on each of your turns to direct one of the red hot rocks towards one creature you choose within 90' of the center. Make a ranged spell attack; you have Advantage on the attack roll if the target is in the lava-and-rocks cylinder. On a hit, the target takes 3d8 bludgeoning damage and 3d6 fire damage.

At Higher Levels. When you cast this spell using a spell slot of 7th level or higher, the damage increases by 2d6 for the laval effect, and by 2d8 for the ranged spell attack for each slot level above 6th.