Oath of Blood

A paladin taking a blood oath, is taking a major decision in his life. In contrary to other oaths, a blood oath is a ritual that requires a sacrifice of his own blood to create a powerful bond which he holds sacred. Breaking this bond would not only be a disgrace to his fellowship but to himself as well. A person who has sworn this sacred oath by which whom he is bounded by blood to a person, deity, idea or following. Being bounded by blood means willing to sacrifice your own lifeforce to protect others.

Tenets of Blood

The tenets of Blood are preservers of the ancient magic of Hemocraft. Using your own blood to cast and empower the magical abilities. Tenets following the following principles.

Sacrifice for the greater good. Sacrifice your own power to complete and survive the tasks ahead of you.

Empowerment of mind body and soul. Strive to empower ones capabilities in their mind and body and therefore find the power within to empower their soul. 

Neither Good nor Evil. Even though Hemocraft and other blood magic is mostly frowned upon and seen as an evil way to use magic. Staying neutral and focusing on oneself is the way for paladins that take the Oath of Blood.

Oath Spells

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 You gain oath spells at the paladin levels listed.

Paladin Level	Spells
3rd	Cure Wounds, Inflict Wounds
5th	Prayer of healing, Wither and Bloom
9th	Bestow curse, Life Transference
13th	Aura of life, Shadow of Moil
17th	Dispel Evil and Good, Mass Cure Wounds

Channel Divinity

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 3rd -level Oath of Blood feature

When you take this oath at 3rd level, you gain the following two Channel Divinity options.

Blood Empowerment. You can use your Channel Divinity to empower your Hemocraft for 1 minute. As a bonus action you can chose to empower the next spell you cast, by sacrificing some lifeforce. When you cast a spell that allows you to roll damage or healing die, you can decide to choose to roll one extra die and add that roll to the total. You take that much health damage. Empowering your spells in this manner must be stated before rolling the extra die.

Sanguine Shield. You can use your Channel Divinity to empower thy mind, body and soul. As a reaction you can use Channel Divinity to focus on oneself and add your proficiency bonus to a saving throw.  

Aura of Bloodletting

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7th-level Oath of Blood feature

Beginning at 7 level, your mind body and soul has endured so much sacrifice where you have become attuned to the loss of lifeforce. You and friendly creatures within 10 feet of you have resistance to slashing, piercing and bludgeoning damage from non-magical sources.

At 18 level, the range of this aura increases to 30 feet.

Sanguine Endowment

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 15th-level Oath of Blood feature

Starting at 15 level, your Hemocraft magic has evolved to a point where you have almost mastered it. When using Blood Empowerment, you can choose to add an additional die to the spell rolls. Also, you gain resistance to the health damage taken while using Blood Empowerment.

Your focus on oneself has made you attune to your surroundings. When using Sanguine Shield, you may also add your proficiency bonus to your Armor Class. Also, your passive perception is increased by your proficiency modifier, and you gain proficiency to the Perception skill.

Ultimate Sacrifice

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 20th – level Oath of Blood feature

At 20 level, sacrifice has been a major part of your life and giving your lifeforce away to help others is nothing but second nature to you. Once per long rest you can transfer your own health to one willing creature and healing them for the same amount. For example, if you remove 40 hit points from yourself, another willing creature can add this to their health pool.