Volcanic Blast

Choose a point you can see on the ground within range. A fountain of lava erupts in a 10-foot wide circle centered on that point. Each creature in that area must make a Dexterity saving throw. A creature takes 4d10 fire damage on a failed save, or half as much damage on a successful one.

Additionally, on failed saves, the creature receives halved healing for 1 hour (does not stack).

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the area of effect doubles, or damage increases by 2d12