Path of the Dragon Ire

Your Dragon Blood enhance your body, choose a Dragon that has this conection with you, you must choose one of the Dragons, and it cant be changed unless your dm say so (and even then it should be extremely hard, almost impossible for most people).

Dragon Flesh

Starting when you choose this path at 3rd level,  you gain +3 to your Armor Class when you´re not using any armor or shield (If youre using any choose the highest, this unlike armor increase the base of natural armor of the Barbarian class). You also gain resistence against the type of damage related to the dragon that is the source of your power. Your skin became even more hard then that of other barbarians and can even be covered in scales of the before mentioned dragon, feel free to add flavour to it as you and your DM see fit, it can be something gradual or instantaneous, the fact is that your pyshique is changed into something beyond other individuals of your race.

Elemental Rage

Beginning at 6th level, when youre raging once a day you can expend and aditional use of your rage as a bonus action, to gain aditional damage to your atacks for the duration of your rage, the damage is the same type as the breath weapon of the dragon, and it is your constitution modifier plus 1d6, you can recover the use of this ability after a long rest.

 

At level 14 the damage becomes CON+ 2d6, and you can use it tiwce and recover two uses of it in a short rest.

 

At level 20 the damage becomes CON+3d6.

Dragon Frigthful Visage

Beginning at 10th level, you can use your action to expand draconic wings from your body gaining 30ft of flight movement they look similar to the ones of the dragon that is the source of your power frightening foes with your menacing presence. When you do so, choose a number of creatures equal to your Strenght modifier (minimum of 1) creature that you can see within 15 feet of you. If the creature can see you, it must succeed on a Wisdom saving throw (DC equal to 8 + your proficiency bonus + your Consitution modifier) or be frightened of you until the end of your next turn. On subsequent turns, you can use your action to extend the duration of the fighening effect on the frightened creature until the end of your next turn. This effect ends if the creature ends its turn out of line of sight or more than 30 feet away from you.

If the creature succeeds on its saving throw or has sucesfully removed you from its line of sight, you can’t use this feature on that creature again for 24 hours.

The Wings coming out of your body deal your CONx10 slashing damage to you that is not reduced by any means, and they stay out until you dismiss them or finish a short rest/long rest.

Draconic Blade

Starting at 14th level you're and even dreadier foe, when you take damage from a creature that is within 5 feet of you, you can use your reaction to make a melee weapon attack against that creature. 

Adittionally once per round you can recover half the damage dealt by Elemental Rage (rounded down) as health points in a bonus action, on a critical hit you recover all the damage dealt by the Class feature as a free action, or half of it (rounded down)  if you have used it before this round.