Blood Boil

You target a creature within range, forcing its blood to boil to extreme temperatures. The creature must make a Constitution saving throw or take 5d10 Fire damage, or half as much on a success. A creature that fails the save has disadvantage on all attack rolls and Strength, Constitution and Dexterity saving throws until the end of your next turn.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d10 for each slot level above 3rd.