Warlock patron

Dragon Color

Patron Color	Damage Type	Additional Eldritch Blast effect
Red, Gold, Brass	Fire	Eldritch Blast's damage die increases to d12.
Blue, Bronze	Lightning	Eldritch Blast scores a critical hit on a 19.
White, Silver	Cold	Targets hit by Eldritch Blast have their movement speed reduced by 10 feet until the start of your next turn.
Green	Poison	Targets hit by Eldritch Blast have disadvantage on the next attack roll it makes before the start of your next turn.
Copper, Black	Acid	Targets hit by Eldritch Blast can't regain hit points until the start of your next turn.

Dragon Blast

Level 1 Dragon feature

Eldritch Blast now deals damage of the type associated with your patron, and gains an additional effect depending on your patron's color. You also learn to speak, read and write Draconic.

Expanded Spell list

Level 1 Dragon Feature

Your patron lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

Spell Level	Spells
1	Absorb Elements, Command
2	Dragon's Breath, Alter Self
3	Bestow Curse, Enemies Abound
4	Fire Shield, Polymorph
5	Dominate Person, Commune

Dragon Scales

Level 6 Dragon feature

You gain resistance to the damage type associated with your patron. In addition, your skin becomes hard and scaly. Your AC becomes 13 + your Dexterity modifier while you are not wearing armor.

Draconic Visage

Level 10 Dragon feature

As a bonus action, you can unleash the dragon within you. You sprout wings that give you a fly speed of 60 feet, and you become immune to the damage type associated with your patron. Additionally, while this transformation lasts, you can ignore resistance to your patron's damage type and you have blindsight to a range of 30 feet.

This effect lasts for 1 minute, or until you fall unconscious or die. Once used, you cannot do so again until you finish a long rest, or expend a warlock spell slot to use it again.

Dragon Incarnate

Level 14 Dragon feature

As an action you can use a sliver of your patron's power to unleash a breath weapon in a 30 foot cone. All creature in that area must make a Dexterity saving throw against your spell save DC or take 10d8 damage of the type associated with your patron. On a successful save, they take half damage. Once you do this, you must finish a short rest to do so again, or expend a warlock spell slot to use it again.