Kitsune Bloodline

You are not of a dragon's bloodline, you are of a Kitsune's; a Hybrid of your base race and a Kitsune. You wish to fit into normal life, but you have many abilities that do no help and only make you stand out even more. On top of your physical racial traits, you have Fox Ears and/or up to nine Fox Tails, and have many abilities similar to a Kitsune's. Your Kitsune blood can even overpower your normal race's blood slightly, and you have a fox nose at the end of your normal nose. Throughout your body is many different spells of Illusion and Fire. Both of these racial traits are augmented through your arcane fey blood. More then likely one or both of your parents had the capability to become a nine-tails.

Kitsune Blood Spells

At 1st level your racial foxfire(Produce Flame) cantrip is enhanced and replaced with the Greater Foxfire cantrip. The cantrip doesn't count against your number of cantrips known. This spell is now so instinctual to you it overrides any other form of fire damage you would cast. You cannot cast any other fire damage spells. If a spell uses multiple damage types including fire you may cast the spell fully with the non-fire damage type.

Illusion is part of the kitsune's fey nature. When a kitsune sorcerer encounters an illusion they have not seen before they can easily see through it and usually reproduce it at a later time. You gain illusion spells at the sorcerer levels listed. 

Illusion Spells
Sorcerer Level
1st- Minor Illusion, Silent Image, Greater Foxfire
3rd- Greater Invisibility, Mirror Image
5th- Phantom Steed, Major Image
7th- Hallucinatory Terrain
9th- Mislead, Seeming

Fox Form

Your Kitsune Blood will begin to grow stronger now. At level 6, you now gain a Fox Form and a Fox Tail(you gain another one if you only had the Fox Tails instead of the Ears), and you gain another tail at 9(2/3), 12(3/4), 15(4/5), 16(5/6), 17(6/7), 18(7/8), 19(8/9), and at 20, you gain one last tail(9)if you don't have it already.

During your Kitsune Form duration(1 hour or stopped by self), your unarmed attack is clawing/biting your enemies, if you use Greater Foxfire, you roll 6d12/5d12 instead of 3d12/2d12 for damage, and you have advantage on any attack rolls against enemies one size more than your Fox Form(small). You gain back a lost Fox Form usage after a Long Rest.

Kitsune Senses

You have begun to be more keen-sensed to the world around you. Starting at level 14, you gain Truesight, Darkvision, and your Fox Ears if you don't have them. You also gain higher powered Foxfire, and you now learn Powerful Foxfire. You also gain Advantage on Insight checks related to Fey and Beast related creatures.

Foxfire Cloak

Starting at 18th level, you learn the Foxfire Cloak spell. After years of training with your flame you have now advanced your technique enough to wrap yourself in your blue fey flame. This does not use your known spell count.