Boiling Blood

You target a living creature in range and cause their blood (or its equivalent) to boil inside their body. The target must make a Constitution saving throw, taking 10d10 Fire damage on a failed save or half as much on success.

If the target is already damaged, on a failure, they instead take 5d10 Fire damage and take 3 levels of Exhaustion as their boiling blood sprays out of their wounds at high speed from the pressure. They take half damage and take 1 level of Exhaustion on a success.

At Higher Levels. When you cast this spell using a spell slot of 8th level or higher, the damage increases by 1d10 for each slot level above 7th.