As an action you can exhale a wave of energy. When you select this race you choose the pattern, line or cone, and the damage type. Poison, force, cold (con save) fire, lightning, acid (dex save). A creature takes 2d6 damage on a failed save and half as much on a success. 

DC=8+CON+proficiency

As an action you can unleash the gifts of your ancestors. You choose one of the following traits, which remain active for 1 minute. You can use this feature once per short or long rest. 

• hardened scales: increase your AC by 2

• natural weapons: you choose to gain a claw attack, tail attack or a bite attack. 

       Claw: make a claw attack for 1d8+str slashing damage and make one additional attack as part of the same action. 

        Tail: make a tail attack as part of your attack action for 1d6 bludgeoning damage. 

        Bite: make a Bite attack for 1d6 and gain temporary hp equal to the damage plus proficiency. 

• dragon wings: you gain a fly speed of 40 ft

• enhanced breath: your breath weapon deals 1 additional damage die and you gain 1 additional use of elemental breath. 

As an action you can transform into a half dragon. You retain all mental stats and your armor class increases by 2 for the duration of the form. 

• wild nature: when you transform, you must make a wisdom saving throw DC= 20- character level to maintain control of this form. On a failed save, you succumb to your animalistic nature, attacking the closest creature to you. If no creatures are within range, you move in a random direction up to your fly speed. 

When you fall to 0 hp you instead begin an unstable transformation. You make the wisdom save to maintain control with disadvantage. You gain a number of temporary hp equal to twice your character level. You continue fighting for 1 minute, after which you return to your base form and remain unconscious but stable. This can occur no more than once per long rest.