The Dragon

Your patron is a scaled creature of legend. You have offered your services in either assisting to saveguard mankind or attempt to bring its downfall. Your pact allows you to tap into the ferocity and elder knowledge of these creatures.

Dragons demand utmost loyalty, often being lawful beings they expect the same of their Warlocks.

Expanded Spell List

Expanded Spell List

Spell Level	Spells
1st	Burning Hands, Chaos Bolt
2nd	Acid Arrow, Alter Self
3rd	Elemental Weapon, Tiny Hut
4th	Ice Storm,  Leomund's Secret Chest
5th	Far Step, Dominate Person

 

Warlocks of the Dragon gain additional spells to their spell list according to the list above with the following tweaks:
Any elemental damage of the listed spells becomes the damage of the type of dragon you made your pact with.
Tiny Hut becomes Tiny Hoard, instead of a house you find yourself in a Cave with false gold pieces, that allow you to sleep on them without gaining exhaustion, these pieces cannot leave the Tiny Hut.
Far Step sprouts etherial wings from your back that carry you towards the area.

Dragonic Patronage

 

Depending on the dragon you made a pact with, you gain features you wouldn't otherwise.
Such as an aura of your dragonic connection, or scales that resist a certain type of damage. As you grow higher in your Patrons favor you will gain more and more feats that grant you dragonic feats.

Armor of Dragons

You gain resistence to the damage type of your patron.

Dragonic Presence

You gain the following feat depending on your Patrons allignment:

Inspire the Weak (Good Aligned).
Your Patron allows you to rally up the people around you. If you rally them for 10 Minutes, allied creatures within 30ft of you gain temporary hitpoints equal to your Warlock level plus your Charisma Modifier. If they have to throw a saving throw, while they have these temporary hitpoints, they can add a number to the score rolled equal to your Charisma modifier (You can do so after you see the result of the roll but before the DM announces whether it hits or not.) The allied creatures cannot gain the temporary hitpoints until they finish a short or long rest.

Frighten the Weak (Evil Aligned).
You Patron allows you to instill fear in your foes. You can use an action to make all hostile creatures within 30ft of you to roll a Wisdom Saving Throw, with half of your Charisma modifier added to your Spell DC. On a failed safe they are frightened of you, on a successful safe they have advantage on other fear effects caused by you. You can use this feature once per short or long rest.

Dragonshape

The Warlock can shapeshift into the form of a young dragon equal to your patrons element.
In that form you gain all their feats and attacks, their ac, their saving throws, however not their current or maximum hitpoints. You also cannot cast spells while in this form. 
The change lasts until you get reduced to 0 hitpoints or for 1 Minute, after which you revert back to your original form. If an attack converts you back to your humanoid form, access damage carries over.

You can only take on the shape of a dragon once per long rest.

Pact of the Dragon Warlock Evocations

Mind of the Beast
Prerequisite: 14th Level
You become magically steeled against the horrors of the world. You can no longer be magically fightened.

Hardened Scales
Prerequisite: 10th Level
You grow a natural armor, while not wearing armor your AC becomes 12 + your Charisma modifier. You can use your natural armor to determine your AC if the armor you wear would leave you with a lower AC. A shield’s benefits apply as normal while you use your natural armor. If you have multiple of features that change your armor class you must choose one to use for calculation.

Bicolored Dragonlord
You become aware of your Patron's heritage coming from two different Dragons. When casting a spell or using the Dragonshape feature, you may choose to cast it as either of the two elements your Patron represents and you can change the damage resistence and positive or negative energy channeling from your class features each short or long rest.