You are Medium or Small. You choose the size when you gain this lineage.

Your base walking speed is 30 feet.

If you replace a race with this lineage, you can keep the following elements of that race: any skill proficiencies you gained from it and any climbing, flying, or swimming speed you gained from it.
If you don’t keep any of those elements or you choose this lineage at character creation, you gain proficiency in two skills of your choice

You can speak, read, and write Common and Draconic. Draconic is thought to be one of the oldest languages and is often used in the study of magic. The language sounds harsh to most other creatures and includes numerous hard consonants and sibilants.

The Dragonsoul Colour determines element, characteristics, breath weapon and aliment of the Soul inside the humanoid body.

Chromatic Dragons

Metallic Dragons

Gem Dragons

You can use your action to exhale destructive energy. Your draconic ancestry determines the size, shape, and damage type of the exhalation. When you use your breath weapon, each creature in the area of the exhalation must make a saving throw, the type of which is determined by your draconic ancestry. The DC for this saving throw equals 8 + your Constitution modifier + your proficiency bonus. A creature takes 2d6 damage on a failed save, and half as much damage on a successful one. The damage increases to 3d6 at 6th level, 4d6 at 11th level, and 5d6 at 16th level. After you use your breath weapon, you can’t use it again until you complete a short or long rest.

Starting at level 1 you gain the following draconic manifestation:

Darkvision

You can see in dim light within 60 feet of you as if it were bright light and in darkness as if it were dim light. You discern colors in that darkness as shades of gray.

Natural Armor

The body of the Dragon Soul has developed patches of dragon scales across its entire form. These create a natural armor. If you are not wearing armor, or if your armor has a lower Armor Class, you can use AC = 10 + your Constitution modifier to determine your Armor Class.
A shield’s benefits apply as normal while you use your natural armor.
However, you cannot wear heavy armor.

Starting at level 3 you can choose one of the following draconic manifestation:

Draconic Teeth

You can manifest a dragon mouth for 1 Minute and do a bonus action with it that deals 1d6 + your constitution modifier piercing damage.
The attack counts as natural weapon attack. Your can use this feature once per short rest 

Draconic Claws

You can manifest a Claws of a Dragon for 1 Minute and you can use your claws to make unarmed strikes. When you hit with them, the strike deals 1d6 + your Constitution modifier slashing damage, instead of the bludgeoning damage normal for an unarmed strike. Your can use this feature once per short rest 

Draconic Skin

To determine your Armor calls you can now use AC = 12 + your Constitution modifier to determine your Armor Class and you gain Resistance to your Dragons Souls Element

Draconic Tail

You can manifest a dragons tail for one round. With the Dragon Tail you can do a sweeping Attack in a 5-foot cone dealing 1d10+ Constitution Modifier bludgeoning and forcing all targets to do a strength saving throw (DC12+ Constitution Modifier). If they fail the saving throw prone. You can use this feature equal your Constitution Modifier per long rest.

Starting at level 10 you gain the following Manifestation:

Draconic Wings

You can manifest the Wings of a Dragon gaining fly speed equal you movement speed. The Wings are active for 1 Minute and can be manifested equal your Constitution modifier per long rest