Your Strength or Dexterity score increases by 2, and one other score of your choice increases by 1.

Young dragonborn grow quickly. 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 80.

Dragonborn tend to extremes, making a conscious choice for one side or the other in the cosmic war between good and evil (represented by Bahamut and Tiamat, respectively). Most dragonborn are good, but those who side with Tiamat can be terrible villains.

Dragonborn are taller and heavier than humans, standing well over 6 feet tall and averaging almost 250 pounds. Your size is Medium.

Your base walking speed is 30 feet.

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

Draconic Ancestry

You choose one of the following options: Dragon Fear, Dragon Hide, or Dragon Breath.

Dragon Fear: When you take the Attack action, you can replace one of your attacks with a draconic roar,  forcing each creature of your choice within 30 feet of you to make a Wisdom saving throw (DC 8 + your proficiency bonus + your Charisma modifier)  or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to this effect for the next 24 hours.  You can use this trait a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.

Dragon Hide: Your scales are harder and your scales sharper than most of your kin. While you aren’t wearing armor, you can calculate your AC as 13 + your Dexterity modifier. You can use a shield and still gain this benefit. In addition, You grow retractable claws from the tips of your fingers. Extending or retracting the claws requires no action. The claws are natural weapons, which you can use to make unarmed strikes. If you hit with them, you deal slashing damage equal to 1d4 + your Strength modifier, instead of the normal bludgeoning damage for an unarmed strike.

Dragon Breath: When you take the Attack action, you can replace one of your attacks with an exhalation of elemental energy in a 30-foot line that is 5 feet wide or a 15ft cone (you determine the shape at character creation). Each creature in the area must make a Dexterity saving throw against a DC equal to 8 + your Constitution modifier + your proficiency bonus. A creature takes 2d8 damage of the type associated with your Draconic Ancestry on a failed save, and half as much damage on a successful one. This damage increases by 1d8 when you reach 5th level (3d8), 11th level (4d8), and 17th level (5d8). You can use this trait a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest. 

Choose one of the following traits: Minor Breath Weapon, Draconic Resilience, or Psionic Mind. 

Minor Breath Weapon: As an action you can use your elemental breath to perform a small effect depending on your draconic ancestry, such as igniting a torch with a gold dragon ancestry, chilling a drink with a white dragon ancestry, or causing a small plant to rapidly decay with a topaz draconic ancestry (the power of the effect is ultimately determined by the DM).

In addition, when you take the Attack action you can replace one of your attacks with a ranged weapon attack using your elemental breath. This attack has a range of 20/60 and deals 1d8 damage of the damage type associated with your draconic ancestry. This counts as a natural weapon you are proficient with and you add your Constitution modifier to the attack and damage rolls. The base damage increases to 2d8 damage at 5th level, 3d8 at 11th level, and 4d8 at 17th level.

Draconic Sight: 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 can’t discern color in darkness, only shades of gray.

Psionic Mind: You can telepathically speak to any creature you can see within 30 feet of you. You don’t need to share a language with the creature, but the creature must be able to understand at least one language. Your communication doesn’t give the creature the ability to respond to you telepathically

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.