Order of the Sanguine Reaver

Your designed for one purpose to hunt the denizens of the night. You have subjected yourself to the dark magics of vampirism to accomplish this. Though only partial you are powered by the Sanguine curse within you. 

Vampiric Rite

Starting at level 3, your rites have a Vampiric edge to them allowing you to strengthen your own vitality from them. At the end of your turn you gain temporary hitpoints equal to half the amoumt of crimson rite damage you have inflicted that turn. 

Sanguine Charm

Starting at level 3, Your Vampiric blood gives you the ability to charm others. You gain the cantrip friends and may cast Charm person as a 1st level spell without expending a spell slot and without material components, wisdom is your spell casting modifier for this spell. You can cast Charm Person in this way once per long rest. 

Blood letter metamorphis

Starting at level 7,  your body has undergone a sort of metamorphosis making you a more deadly stalker of the night. You can wreath your sword in Necrotic energy as a bonus avtion if you have a crimson rite active. The damage of the rite is doubled until the end of your turn and the damage type becomes necrotic. You heal for half the Necrotic damage done but do not gain the benefits from your Vampiric Rite feature. You can use this feature equal to an amount of times equal to a quarter of your bloodhunter level rounded down. 

Mist form

Starting at 15th level, you have gained the ability to turn your body into a mist like vapour. You gain the misty step spell and may cast it at will without material components. You can use this ability an amount of times equal to a quarter of your blood hunter level rounded down and regain all uses after a long rest.

Additionally you can use your bonus action to take on a mist form. While in mist form you can take no actions other than your movement. You can not be targeted by spells or attacks and receive no damage or healing from either. You have a fly speed of 30ft and can fit through any gaps in an otherwise solid surface. If your mist form is subjected to string winds such as the effects of the gust of wind spell you take 5d10 bludgeoning damage and revert back to your normal form. You can use this feature once per short or long rest. 

Sanguine Reaver

Starting at lev 18, you have mastered your Vampiric curse. Your Blood Letters Metamorphosis feature now recharges on a short rest additionally you can turn into a monstrous Vampiric form as a bonus action. Your nails become elongated, your teeth become fangs and your eyes turn scarlet. You can not use weapons while in this form. Any weapon you are holding when you use this feature is dropped and any crimson rite applied is transferred to a natural weapon of your choice. While in this form you gain the following features but can not use your Blood letters Metamorphism feature or Sanguine Charm feature while in this form. 

Extra attack: You may attack 3 times instead of 2 whenever you take the attack action on your turn.

Reavers Claws: You have claws which you can use as a natural weapon. They deal 2d6 damage on a hit and have the finesse property. 

Vampiric maw: You have a mouth full of sharp fangs that you can use as a natural weapon. They deal 2d4(Piercing) damage and 1d10 Necrotic damage on a hit. You regain hit points equal the the Necrotic damage done. It has the finesse property

Stalkers speed: Your movement speed becomes 50ft.

Sanguine Strength: you have resistance against Non-magical Slashing, piercing and bludgeoning damage from un-silvered weapons and resistance to cold and Necrotic damage.

This form lasts for one minute and ends early if your incapacitated or use a bonus action to end it early. You can enter this form 3 times and regain all uses of this feature on a long rest. 

Stalkers Shadow

Starting at level 11, you can manipulate the shadows to make you exceedingly quiet and stealthy. While in dim light or darkness you can gain a +5 bonus to stealth checks.