Fey trickster

Fey are mystical creature who love to make some pranks. Sometime, one of these cunning creatures decide to bond with a particularly mischievous individual who chair whit her the same chaotic and playful personality. So, when a fey spirit bond herself with a rogue, a fey trickster born.
This kind of individual combine their rogue skill with the chaotic power of their fey companion. Their bond is incredibly strong, like an eternal friendship. Some even become lovers. Fey trickster and their trusty faerie companion can cause a lot of chaos and take advantage from this chaos. They are professional in the art of steal, kill and run away with their incredible mobility.

Eternal faerie friendship

At level 3, your mischievous nature attracts a fey spirit who bond with you. Tanks to this new friend, you can speak and understand “Sylvan”. You also gain the spell “Faerie friend”.

Faerie friend
level 0 - conjuration
Casting Time: 1 hours
Range: 10 feet
Components: none
Duration: Instantaneous
You summon your fey companion, a spirit that takes an animal form you choose: bat, cat, crab, frog (toad), hawk, lizard, octopus, owl, poisonous snake, fish (quipper), rat, raven, sea horse, spider, or weasel. This spirit can also take the form of a fey with humanoid trait. When he does so, his stats and movement speed are the same as a pixie. Appearing in an unoccupied space within range, the fey companion has his Strength, Dexterity and Constitution statistics of the chosen form, but his Intelligence, Wisdom and Charisma statistics are the same as yours, which implies that this companion has human intelligence. Your companion his unique and have his own personality. Generally, the fey companion is mischievous and get quickly bored if they don’t prank anybody. He can speak the sylvan language.
His maximum hit points are, regardless of his form, equal to your charisma modifier + half of your maximum hit point, rounded up to the minimum. This fey companion as proficiency in “Sleight of hand”. The proficiency bonus of your companion is the same as yours.
          Your fey companion acts independently of you, but it always obeys your commands. In combat, he acts at the same time as you. He can take any action as normal, including attack. When he attacks, he inflicts 1d4 psychic damage. The damage of his attack increases by 1d4 when you reach 5th level (2d4), 11th level (3d4), and 17th level (4d4).
         When the companion drops to 0 hit points, it disappears, leaving behind no physical form. It reappears after you cast this spell again. As an action, you can temporarily dismiss this magical friend to a pocket dimension, but you can’t dismiss him forever, because he his a part of yourself. In the same way, even the gods can't separate you.
Your companion can use all your rogue abilities, including sneak attack. When he does a sneak attack, the bonus damage is considered to be psychic damage, but this bonus damage is however halved, rounded up to the maximum, compared to your sneak attack damage bonus.
         As an action while it is temporarily dismissed, you can cause it to reappear in any unoccupied space within 30 feet of you.
          While your companion is within 100 feet of you, you can communicate with it telepathically. Additionally, as an action, you can see through his eyes and hear what it hears until the start of your next turn, gaining the benefits of any special senses that the familiar has. During this time, you are deaf and blind with regard to your own senses.
       If you cast this spell while your companion is already summoned, you instead cause it to adopt a new form. Choose one of the forms from the above list. Your familiar transforms into the chosen creature.
       Finally, your companion can’t be charmed or put a sleep with magic, and he can use his action to get rid of any charm effect on you.

Faerie prank

At level 3, When your companion is within 100 feet of you, you can cast the cantrip “Vicious mockery” and “Thaumaturgy”. Your spell casting ability is your Charisma.
Also, when one of the following events happened:
-you or your companion use an action that inflict a disadvantage to one or multiple enemy targets
-you or your companion perform a sneak attack.
both of you can use cunning action without needing a bonus action or use cunning action twice during the same turn. You can’t use the same type of cunning action twice in the same turn (you can dash and hide, or disengage and dash, but you can’t dash two time).

Walk has a fey

At level 9, When your companion is within 100 feet of you, your fey companion or you can cast misty step without any spell slot two time, or a number of time equal to your charisma modifier multiply by two if you have at least a +2 in this stat. You and your companion can both cast this spell in the same turn. This ability regains full use on long rest.

Fey transformation

At level 13, When your companion is within 100 feet of you, your companion can, with a bonus action, change his size to small, medium, or huge (When huge, he can be use has a mount).
His appearance can now be change by using his action, limited to the form available for your companion.

Chaotic duo

At level 17, your companion can use his action to roll 3 times in the sorcerer’s wild magic table. You choose one of the 3 effect to happen. If the effect is targeting only the “caster” (your companion), you can decide to make it affect you instead or making it affect both of you. Your companion can start a wild magic surge a number once. You have to take a long rest to regain the use of this ability.