Your presence terrifies foes, giving you proficiency in Intimidation.

Exposure to dark magic has given you the ability to use certain spells.

Because of your superior strength, you are proficient with most heavy weapons.

Another side effect of the ritual that transformed you, is darkvision up to 40 feet. You can see in dim light like it's bright, and darkness like dim light.

Your large talons can be used as slashing weapons.

Your tough scales add 2 to your armor class, and at night, you add 2 to your stealth.

Your Strength and Constitution scores both score increase by 3, and your Charisma score decreases by 1.

Dark Dragonborn age at the same rate as standard Dragonborn, but they live about 20 years longer. They walk hours after hatching, attain the size and development of a 10-year-old human child by the age of 3, and reach adulthood by 15. They live to be around 100.

Dark Dragonborn are naturally evil and very hostile, but some still haven't accepted what happened to them, and struggle with their villainous urges. But, the ones that have embraced it are monsters, who kill men, women, and children without remorse.

Dark Dragonborn are larger than standard Dragonborn, and stand anywhere between 6.5 and 7.5 feet tall. An average sized one is about 400 pounds. Dark Dragonborn are larger than most creatures, and have proficiency in heavy armor.

Your base walking and flying speed is 40 feet.

You have draconic ancestry. Choose one type of dragon from the Draconic Ancestry table. Your breath weapon and damage resistance are determined by the dragon type, as shown in the table.

Draconic Ancestry

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.

You have resistance to the damage type associated with your draconic ancestry.

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.