Oath of Dragon knight

Oaths of Bahamut:

-Value: Demostrates being worthy in the face of adversity. Inspire your friends to fight alongside you for good purposes.
-Without corruption: Demostrate purity in your actions, in addition to your words.
-Discipline: You are a protector with great willpower. Learning from mistakes its wise.

Tiamat's Oaths:

-Power: Seek and demostrate your power in the face of all adversity.
-Dominion: Those against your will have no redemption.
-Without mercy: Execute your oath without hesitation.

Channel Divinity

You gain two Channel Divinity options:

Draconic Weapon: As a bonus action, for 1 minute you can imbue your weapon with additional elemental damage between fire, cold, lightning, acid, poison or thunder. This damage is equal to your proficiency bonus modifier on all attacks. You can change the element on each attack.

Draconic Presence: As an action, you can present your holy symbol to cause charm or fear (your choice) for 10 minutes to all creatures of your choice within 30 feet of you that fail a wisdom save. Damaging a creature frightened by this effect causes them to make a wisdom save to get rid of this effect. A creature frightened by this effect can make a wisdom save at the end of each turn to get rid of this effect if it is not in sight of the source of the fear.

Draconic ancestry

Choose an elemental damage between fire, cold, lightning, acid, poison or thunder. You are resistant to this type of damage. At each long rest, you can change a resistance for another one

.
You learn the Draconic language. If you know that language, choose another language instead.

Oath Spells

You gain oath spells at the paladin levels listed.

Oath of Devotion Spells

Aura of Dragon Soul

While you are conscious, you and allied creatures within 10 feet of you are resistant to the damage type associated with your Draconic ancestry. At level 18, this aura increases to 30 feet.

Dragon presage

You gain flying speed equal to your foot speed thanks to dragon wings growing from your back. In addition, you gain advantage on saving throws if any dragon forces you to make a saving throw.

herald of the dragon

As an action, you can awaken the powers of the dragon that are beating within you for having been true to its path.

-You gain truesight within 30 feet of you
-You are immune to all types of damage received from your draconic ancestry
-Your attacks deal an additional 1d10 elemental damage (your choice based on your draconic ancestry) ignoring the enemy's resistance or immunity to this damage.
-Your size increases to Huge for the duration of the effect.

Once you use this feature, you can't use it again until you take a long rest.