Kitsunetsuki

The kitsune, originally thought to be a close relation to the weretouched shifters due to their shifting nature, is a fox spirit who has possessed a young woman’s body. It is believed there are two types of kitsune spirits, nogitsune and zenko. The nogitsune is a dark trickster fox, and the zenko is a celestial fox. The spirits are thought to be messengers, but the patron or deity they serve is unknown.

 When the possession happens, the woman takes on features of the fox’s spirit with a narrow face, close-set eyes, thin eyebrows, and high cheekbones. The kitsune spirit can fully change its host into their fox form at will, or can temporarily enhance its host with animalistic features without fully turning into a fox. The kitsune finds possessing human women the easiest, though there are records of other races and genders being possessed.

A kitsune spirit will only possess a host if they have the same alignment as to not be in conflict with the host's nature.

A kitsune can be exorcised but the ritual is unknown.

Kitsune Form

There are two types of kitsune spirits, nogitsune and zenko. The nogitsune is a necrotic fox, and the zenko is a radiant fox. The kitsune spirit that has possessed you is able to shift you into a foxlike creature that contains the traits related to the spirit's essence.

When the possession happens, your features take on features of the fox’s spirit with a narrow face, close-set eyes, thin eyebrows, and high cheekbones and the kitsune spirit can fully change you into their fox form at will.

You can stay in your form for a number of hours equal to half your sorcerer level (rounded down), and the traits can be found under the creatures tab (using the druid's wildshape ruleset). You can find each creature's stats under the extras/wildshape tab (make sure you add each kitsune form, single, five, seven, and nine tailed, to your homebrew collection).

Your kitsune form starts with one tail at 1st level and gains scions at 6th, 14th, and 18th level. Traits from previous forms are retained.

Darkvision

The kitsune possessing you is accustomed to hunting during the night.

If you don’t already have darkvision, you can now 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.

Kitsune Spells

Starting at 1st level, your kitsune possession has added its influence over your mind. You learn additional spells when you reach certain levels in this class, as shown on the Kitsune Spells table.

The cantrips count as a sorcerer cantrip and against the number of cantrips you know. The spells count as a sorcerer spell for you but don't count against the number of sorcerer spells you know. These cantrips and spells can’t be replaced when you gain a level in this class.

Single-Tailed Kitsune

At 1st level, the kitsune spirit possessing you can take one of two forms. Your coloring starts as reddish-orange much like a traditional fox and is considered a tiny creature.

Nogitsune

The dark trickster kitsune's spirit gains you resistance to necrotic damage.

Zenko

The celestial kitsune gains you resistance to radiant damage.

Five-Tailed Scion

At 6th level, your kitsune form now has five tails and is considered a small creature. With the added tails your kitsune form gains power, your bites are now considered magical and deal extra 1d6 necrotic or radiant damage based off of the spirit possessing you.

Nimble Fox

While in your fox form you can nimbly dodge out of the way of certain area effects, such as an ancient red dragon’s fiery breath or an ice storm spell. When you are subjected to an effect that allows you to make a Dexterity saving throw to take only half damage, you instead take no damage if you succeed on the saving throw, and only half damage if you fail.

Opportunity attacks against you are taken at disadvantage.

Nogitsune

The tips of your tails now fade from red to a darker gray.

Zenko

The tips of your tails now fade from red to a pale yellow.

Seven-Tailed Scion

At 14th level, your kitsune form now has seven tails and is considered a medium creature. You can transform into and out of your form twice a long rest.

The kitsune’s influence and understanding over you keeps you from being charmed by others while a humanoid.

You’ve become immune to necrotic or radiant damage in your kitsune form and can now speak languages you know when transformed.

Swift Fox

Now it only takes a bonus action to enter your kitsune form, and your speed, while you are in your fox form, is 50.

Nogitsune

Your tails are now completely dark gray, and what once was red has begun to darken.

Zenko

Your tails are now a white-yellow, and what once was red has begun to lighten. 

Nine-Tailed Scion

At 18th level, your kitsune form now has nine tails and is considered a large creature. As a bonus action, you can transform into or out of your form once per turn. The kitsune’s influence and understanding over you keeps you from being frightened by others while a humanoid.

Cunning Fox

You have reached the pinnacle of wisdom and understanding of your kitsune ways. You understand the ways magic flows and can now cast spells with no material components when in your fox form. You can ignore the somatic and material components that lack a cost and aren’t consumed by a spell of your sorcerer spells. You gain this benefit in both your normal shape and in your kitsune form.

Timeless Body

The spirit possessing you causes you to age more slowly. For every 10 years that pass, your body ages only 1 year.

Nogitsune

Your form is completely dark gray to black.

Zenko

Your form is completely light yellow to white.