Order of the Dragon Veins

The blood of Dragons contains great power, and the dragons themselves are aware of it. Dragons have shared their blood secrets with trusted followers for centuries, both for good or bad. Only the ones with control of their blood can survive the merge, and the person who accept this gift is capable of channeling the elemental power inside its veins with superior potency

Draconic Mentor

When you reach level 3, your veins are ready to accept the blood from your Draconic Mentor. You learn the draconic language and choose a dragon mentor associated with an element, your Draconic Rite. You can't change this choice afterwards, but you can replace the Rite from level 1. You gain more affinity with the element of the chosen Primal Rite, there are some features that can only be used with your Draconic Rite, and the health cost is halved for that element 

Fire: Gold, Red, Brass
Cold: Silver, White
Lighting: Bronze, Blue
Acid: Copper, Black
Poison: Green

When you reach level 11 in this class, whenever you hit a creature with the Draconic Rite, the energy leaps from one target to another, you can deal additional damage of the same type to a creature you can see that is 5 feet of the first target, the damage is equal to your Wisdom modifier.

Dragonblood Channel

At level 3, when you hit a creature with the Draconic Rite activated, you can use a reaction to deal one additional Rite dice damage. You can use this feature a number of times equal to 1 + your wisdom modifier, regaining all uses in a long rest.

Blood Breath

When you reach level 7, you learn how to release power from your your Draconic Rite. As an action, you can dispel your current Rite and create a 15ft long cone starting from the end of your weapon. Every creature in the area must make a dexterity saving throw. If it fails, the creature takes 5d6 of damage of the Rite type, and half on success. The damage die changes as your crimson Rite die changes. You can use this feature once and regain the use in a short or long rest.

Dragon's Armor

At level 11, you gain resistance to the damage associated with your draconic mentor. In addition, you skin becomes stronger. You gain +1 on your AC.

Improved Dragonblood Channel

At level 15, whenever you use Dragonblood Channel, you overcome resistance for the Rite damage.  In addition, as part of the same action, you can spend a Hit Die to heal yourself. Roll the die, add your Constitution modifier, and regain a number of hitpoints equal to the total (minimum of 1).

Ancient Veins

At level 18, your draconic blood makes you age more slowly. For every 5 years that passes, you only age 1 year.

Dragon Shape

At 18th level, your connection with your draconic part becomes strongest. You can use an action and sacrifice half your life to transform into the Young version of your Draconic Mentor for one minute with some alterations:

• You retain your Intelligence, Wisdom and Charisma scores;
• You retain all your Skills and Saving Throws;
• If any abilities requires a saving throw, use 8 + proficiency bonus + your Wisdom modifier.
• The HP of the Dragon form is the same of the max HP of your humanoid form
• The Breath Weapon deal 8d10 damage.

You can only use this ability once and regain the use in long rest.