Blood Demon(Nexus)

Successor to the Hanekage, Wielder of the Ame-no-Habakiri and the living proof of the lineage of a long forgotten Overlord, a Blood Demon Fighter focuses on the mastery of their legacy Blood Arts, constantly training and progressing. Only by gaining greater strength will they be able to bring Honor to their clan and spread their name far and wise, as their ancestors once did.

Hanekage, the amalgam of impurity and evil emotion, was an unnatural byproduct of the Scarlet Faction's attempt to achieve true Oneness with their Blood Arts. As such, it was sealed away after a great sacrifice and the Golden Age of the Scarlet Faction seemed to be in sight as their Blood arts had been elevated to a Supreme Art. However, it soon came to notice realized that the leader of the Scarlet Faction, who would later be known as the First Blood Demon, had struck a deal with Hanekage and has been siphoning its powers to fuel his own forbidden Blood Experiments. He later destroyed the Scarlet Faction and rose to the pinnacle of strength as a Demonic Overlord, passing his legacy to his greatest pupil. Hence came the tradition of Blood Art Inheritance, the greatest wealth being the Demon Sword wielded by the First Blood Demon, Ame-no-Habakiri itself.

Ame-no-Habakiri

At the 3rd Level, the Blood Demon residing within your chosen Martial weapon fuels your Blood Arts. You gain Demon Blood upto a maximum of twice your proficiency Bonus, which you fully regain after a long rest. You cannot be separated from Ame-no-Habakiri unless you wish for it. 

Successor of Blood

At the 3rd level, your constant training with the Arts of your ancestors allows you to perform feats of mortal awe. You gain access to the following Blood Arts-

• As a bonus action, spend 1 Demon Blood to gain 1d4 bonus damage corresponding to weapon on attacks for one turn. This dice increases to d6s at level 10 and d8s at level 18.
• As a bonus action, you spend 2 Demon Blood for a burst speed. You move upto half your movement and this movement doesn't provoke opportunity attacks and ignore non-magical terrain.
• At level 10: As a Reaction, you can spend one Demon Blood Points and gain a Bonus to AC equal to 3 till the end of your next turn.
• At level 15: As your mastery grows, you gain a sixth sense in matters related to Blood. You are aware of the presence of any and all Blood within 30 ft of you regardless of sight. Follows Blindsense rules.
• At level 18: You can spend three points of Demon Blood to add half your proficiency Bonus to all attack rolls made that turn.

Blood Art-Demon Feast

At the 7th level, you gain proficiency in Charisma (Intimidation) checks. Whenever you reduce a creature to 0 Hit points using Ame-no-Habakiri, you can feed its corpse to your weapon, it's continued digestion gaining the following benefits lasting for a minute. You can use this feature once per short rest.

• You choose one creature you can see and mark it, in a way that does not take concentration. After each successful hit, the creature must make a Constitution saving throw against a DC of [8+Prof+Con Mod], unaffected if it does not possesses Blood. On a failed save, it gains a 'Mark of Blood'. At the end of its turn, it takes an extra necrotic damage equal to the d4s corresponding number of marks. The marks fade at the start of your next turn. This dice increases to d6s at level 10 and d8s at level 18.
• You regain one Demon Blood at the end of the duration of one minute. This recovery increases to two at the 10th Level.

Your Ame-no-Habakiri counts as magical for the purpose of overcoming resistances.

Blood Art-Demon Transformation

At the 10th level as a bonus Action, you can spend 3 Demon Blood to channel Hanekage within your weapon and magically create a being of pure Demonic will. While it is summoned, your consciousness is magically stored in the new body and your original body is considered incapacitated. You gain the following benefits-

•  Your AC becomes 13 + (Constitution Modifier), increasing to 15 + (Constitution Modifier) at level 18.
• You gain natural melee weapons that count as two handed heavy weapons and deal magical slashing or piercing damage on hit. Your reach is increased to 10ft.
• Damage dice scales as 2d6 at Fighter level 10, 2d8 at Fighter Level 18. You use your Constitution Modifier instead of Strength or Dexterity when making attack and damage rolls with these weapons.
• Your Movement Speed is increased by 5ft.
• Your share your Hit Points with your main body and gain a bonus THP equal to 2x your Fighter Level.
• As a reaction to your main body taking damage, you may forcefully end your Blood Art: Demon Transformation and force all creature within a 5 ft. range of your main body to make a Con saving throw of DC (8+Prof+Con Mod) dealing 2d6 necrotic damage and being pushed away 10ft on a failure. Take half the damage on success and ignore the pushback. Damage scales to 2d8 at Fighter level 18.
• You can use this feature TWICE per short rest or long rest.

Any attunement items are melded into your body, as long as they are not weapons, armor or focuses. You can maintain this form for one minute. You are considered a creature while in your demon body as is your unconscious body. Your demon body need not eat, sleep or breathe and doesn't suffer from exhaustion. Your demon body cannot exceed a distance of 45 feet from your unconscious body.

Blood Art-Blood Pneuma

Your Mastery over Blood Arts has allowed you exert your physical body even further at the 15th level. While Blood Art: Demon Transformation is active:

• You gain a Flight(Hover) speed equal to your movement speed. The Range of your Demon Body extends to a total of 60 ft. from your unconscious body.
•  Enemies within 15ft. that attack your Demon Body takes Necrotic damage equal to your Constitution modifier.

Heavenly Demon

At the 18th level you have become one with Ame-no-Habakiri, fighting as a single entity. You master the Supreme Art of the Hanekage, allowing you to truly step into an unfathomable realm. While your Blood Art: Demon transformation is active:

•  Once per turn when you kill a creature that possesses Blood, your vigor is boosted temporarily allowing to to make an extra attack against another creature.
• While your Blood Art: Demon transformation is active, you may choose to have your Main Body meld in with your demon body hence creating a singular entity. There is no distance limit in this form.