Bloodboil

This spell is only used by the most evil of dragons. Its usage is considered taboo amongst dragonkind.

The target must make a Constitution saving throw. On a successful saving throw, the spell ends. On a failure, the target's moisture and all liquids within the body will start heating up to the point of boiling, causing excruciating pain. The spell will no longer end on a successful saving throw.

At the beginning of each of the target creature's turns, it must make a Constitution saving throw. The target takes 3d6 fire damage on a failed save, or half as much on a successful one. This spell has no effect on undead.

The spell ends if you lose line of sight from the target. If the target is killed by this spell, the target melts from the inside out becoming a puddle of steaming gore.

If you target a plant creature or a magical plant, it makes the saving throw with disadvantage, and the spell deals maximum damage to it.