Boiling Blood

The blood of creatures in a selected area you can see begins to boil. Any creature that ends its turn within 5 feet of ta point you can see must make a Constitution saving throw.  Creatures takes 2d6 fire damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd.