Speed 30

Dex + 2 due to you animalistic mind and past, combed with your new form

Charm + 2 

Though starting out as a normal fox, kitsune quickly grow to the same size as their masters. Your size is medium.

Your fey ancestry is bolstered by the abyssal blood flowing through you veins, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can't discern color in darkness only shades of gray.

You can speak, read, and write Common and either Infernal or Abyssal.

The kitsune kisses a creature charmed by it or a willing creature. Can use this equal to your Proficiency Modifier.
The target must make a Constitution saving throw ( spell save or DC 15) against this magic, taking (1d10 + Cha) psychic damage on a failed save, or half as much damage on a successful one.
The target's hit point maximum is reduced by an amount equal to the damage taken. This reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0. You Gain Temp HP equal to half the damage you deal.
This ability cannot be used again until a long rest has been completed.

The spell’s damage increases by 1d6 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10).

Can be used equal to proficiency modifier. Uses to be restored after a long rest.
The Infectious Kiss is a kiss that will convert others to your side by infecting them, changing them, and bonding them to you. The longer they remain under your control the more difficult it is to undo.

Once kissed the target must make a CON save either DC15 or against your spell save DC, whichever is higher. If they fail the first CON save, a second CON save must be made to see if they survive the infection. Once turned, they will continue to make a CON save each day. Upon four failures they have been completely taken over and are 100% loyal. Upon four consecutive successes they are not taken over, but are strongly bonded.

The target, willing or unwilling, can choose to fail any CON save.

WILLING TARGET

Infection: The CON save will be at disadvantage. Once you reach level 3 you can force a reroll (once per long rest), and at level 7 they automatically fail.
Save series: A willing target automatically has one failed CON save for this series. The remaining CON saves are rolled at disadvantage. 

UNWILLING TARGET

Infection: CON save. When you reach level 4,  they roll at disadvantage. At level 6, you can force a reroll (once per long rest) reroll increases  by 1 and Levels 8, 15, 20.
Save series: A regular target must fail four CON saves in a row to be completely taken over. The third and fourth rolls are at disadvantage as the bond strengthens with each fail.

INFECTIOUS FORM: (Roll d12)

Level of change/side effects for even rolled infectious forms

1 - change to animal (no moon phases)

2 - major side effects (ex being wolf with human mind, being human with wolf mind - no moon phases)

3 - hybrid form only

4 - minor side effects (Humans Traits in beast form at night)

5 - minor side effects (Animal Traits in Human forms during the day)

6 - no side effects 

your shape shift form, will last 4 hours, and can use this skill equal to your Proficiency each day. (or long rest)

While in this form, your size is Small as a Fox, and Medium as a Wolf.
Your Claw become weapons as well as your teeth, in these forms, your attacks become,

Claws, Hit +4, damage 2D6+Dex

Savage Bite, Hit +5, Damage 1D10 + Str.
Once Bitten, the target must make a Con Save, on a fail you latch on and hold. on your next turn if still latched, you auto Hit, and your damage becomes 2D10 + Str. 
Each turn you are latched, target must make a Con Save to try to remove you. any other Enemy can attempt to remove you from your target, and must make a Str Save to remove vs your Con Save. 
If another enemy is able to remove you, you can use your reaction to bite them and latch onto a new target.

You begin with one tail, a little over half of your total height. As you become stronger, you will gain more tails, and gain more spell with each one. These spells have a blue flame. Tails that are cut off or removed do not grow back but can be restored by using a 7th level Regenerate spell. Removed tails do not cause a loss of powers.
With odd number tails, you gain a fire-based spell, with even, a spell based off the fiend that raised you or an influential Spell.

Tails will grow in each 3rd level after level 1. (Lv. 1, 4, 7, 10, 13, 16, 19)

Spells will come from the Sorcerer Spell set. You must have a spell slot to cast the spell you level.