Aubade-Incinerator

Incinerator: Once per long rest, you can use a powerful blast that does 2D10 Fire damage at the expense of your next turn. The enemy has the opportunity to make a dexterity saving throw, and if they succeed, only take half damage. Every time you level up, add an additional 1D10 to the damage. DC = 12+strength modifier. Range: 50ft. Past 50 ft roll with  disadvantage. The area of effect is 5ft in diameter