Your lineage stems from a dragon progenitor. Choose the kind of dragon from the Draconic Ancestors table. Your choice affects your Breath Weapon and Damage Immunity traits as well as your appearance.

When you take the Attack action on your turn, you can replace one of your attacks with an exhalation of magical energy in either a 15-foot Cone or a 30-foot Line that is 5 feet wide (choose the shape each time). Each creature in that area must make a Dexterity saving throw (DC 8 plus your Constitution modifier and Proficiency Bonus). On a failed save, a creature takes 1d10 damage of the type determined by your Draconic Ancestry trait. On a successful save, a creature takes half as much damage. This damage increases by 1d10 when you reach character levels 5 (2d10), 11 (3d10), and 17 (4d10).

You can use this Breath Weapon a number of times equal to double your Proficiency Bonus, and you regain all expended uses when you finish a Long Rest.

You have Immunity to the damage type determined by your Draconic Ancestry trait.

You have Darkvision with a range of 120 feet.

You have Blindsight with a range of 30 feet.

As a Dragon, you can channel draconic magic to give yourself flight. As a Bonus Action, you sprout spectral wings on your back until you dismiss the wings (no action required) or lose your humanoid from. During that time, you have a Fly Speed equal to your Speed. Your wings appear to be made of the same energy as your Breath Weapon.