Uncontrolled Burst

Energy erupts from within you. Creatures within range (15/30 ft. cube) must make a dexterity saving throw. On a failed save, those creatures take your current hit points -1 damage of whichever type is associated with your draconic bloodline. On a success, they take half as much. You must also make a constitution saving throw. On a failed save, the range is increased to 30 feet. Regardless of success or failure, your HP lowers to 1 HP immediately after use.

The DC for both is equal to your spell save DC.

once used add 1 level of exhaustion.