Bloodblade

Bloodblades are hardy and dangerous warriors. They blend dark magic with martial prowess, and use their unique influence on the weave to overpower and intimidate their way through a fight. A Bloodblade becomes such by studying a Macabre Grimoire, a strange tome that appears mundane, but in the hands of one who desires power, concise red writing fills its pages, detailing the methods and techniques one needs to manipulate another's life force. Through the manipulation of the blood of another, a Bloodblade wins his wars.

Bloodforge

Create Weapon. You concentrate, as a bonus action, forcing your will through a source of blood, drawing it through the air into your hand in the shape of a weapon you desire. The blood must be plentiful enough for the desired weapon. The weapon lasts one hour per class level. You can only create and maintain one weapon at a time, excepting arrows. If a weapon leaves your grasp, after 10 seconds it reverts to a pool of blood. 

Blended Blood. If the source of blood is a mixture, whether it be of blood and poison or blood and acid, the weapon will take on the effects of the additive over its lifetime. The more diluted the blood is, the less time the weapon will maintain its unique properties. 

Monstrous Blood. If the source of blood is that of a creature whose blood would have unique properties on it's own, such as a dragon or a troll, the weapon will retain these properties for as long as it is formed. The less familiar the Blood Blade is with the creature, the more difficult it will be to form a weapon from its blood.

Sanguine Master

The Blood Blade learns to manipulate the fluid that flows through themselves, their allies, and their enemies. They can use their strength to move, mold and pull blood, even if they cannot see it.

Blood Attuned

The Bloodblade is unshakeable when blood is on the line. If a creature is injured or bleeding, you can 'sense' exactly where they are within 30 feet of you, achieving blindsight. You can spot pools of blood right away, and have advantage when performing survival checks to track an injured creature. When performing medicine checks regarding wounds or injuries you have expertise.

Blood Rite

True Bloodweapon. After spending time preparing, the Bloodblade can create one +2 weapon with one unique property, dealing 1d6 damage. This weapon can be formed as a free action, and the source blood can be kept in a bottle or in the Bloodblade's body. If the latter, the Bloodblade takes 5 points of damage each time they draw the weapon. This weapon does not deteriorate. If the weapon leaves the Bloodblade's grasp, after 10 seconds it reverts to a pool of blood.

Blood Armor. The Bloodblade can reinforce whatever armor they are wearing as a bonus action, increasing protection and raising their AC by 1. This requires 5 vials of blood. This armor lasts until the Bloodblade dispels it. 

Crimson Manipulation

After years of practice and study, a Bloodblade can manipulate the blood of others against their will.

Final Extraction. In combat, you lift a target off the ground and forcefully rip the blood from their body, gaining their weight in blood to be used as you wish. If the creature has less than 100 hp and fail a constitution saving throw, they immediately perish.