Chromatic Patron

Whether it be with Tiamat, a cult of Tiamat, or a dragon looking to use you for power. You have made a powerful pact that grants you dragon like abilities. 

Level 3: Level 3-Chromatic gift

When you obtain this feature and whenever you finish a long rest, choose a damage type:  Fire, ice, Lightning, acid, or poison. Whenever you deal damage of the chosen type, deal an Additional d4 of that damage. This increases to a d6 at lvl 6, 2d8 at lvl 10, and 2d10 at lvl 14. 

Level 6: Level 6- Gift of dragon’s breath

When you take the Attack action on your turn, you can replace one of your attacks with an exhalation of magical energy in either a 15-foot Cone or a 30-foot Line that is 5 feet wide (choose the shape each time). Each creature in that area must make a Dexterity saving throw, the dc is equal to your spell save dc. On a failed save. A creature takes 2d10 damage of the type chosen by your Chromatic Gift feature, 4d10 at lvl 14, and half as much on a successful save. You may use this feature a number of times equal to your proficiency bonus, and regain all uses on a long rest. If you already have a breath weapon, you may add this damage onto your existing breath weapon attack to use this feature, but only deal half of the total damage. 

 

Level 10: Level 10- Draconic influence

Whenever you would deal damage, you may change one of the types of damage it deals to the type chosen by, Chromatic Gift when you do, add an additional die of damage that source would normally deal. You may use this feature three times per long rest

Level 14: Level 14- Draconic form

Twice per long rest  you may assume the form of a young chromatic dragon of your choice as an action. (blue black, green, red, white) your hit points do not change, but you gain temporary hit points equal to twice your warlock level, Your other in-game statistics change to match the dragon’s unless yours are higher. You retain all features of this subclass and may still cast spells using you charisma modifier.This transformation lasts for 1 minute or until you transform back(no action required) , have the unconscious condition, or are killed.