For those of a higher economic standing, there exists a synthetic blood. In its early stages, it was brought about with nanometer sized robots built to carry oxygen in the same way as red blood cells. While this technology has been refined into a silvery fluid, the prototype phase used Abjuration magic as a power source. The result of this was an ethereal blue fluid that carried oxygen and arcane essence throughout the body. Many of the people who received this synthetic blood prototype found that the replication process was so effective it carried into their children, and replaced their natural blood entirely. Many of these people have been branded as "Ghost blood" for the transparent foggy appearance of the blood and magic that flows through them.
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Arcane Synthblood
At 1st level, when you choose this origin, use your Constitution modifier instead of Charisma when calculating Spell Save DC and Spell attack modifier.
Force Spell
Beginning at 1st level, if you have no available spell slots, you may choose to sacrifice hit points to cast a spell instead. When you do this, sacrifice hit points equal to the spell's level in d6.
Nanotech Core
At 6th level, the nanotech in your blood has assimilated your heart, and can now assimilate foreign blood. As an action, ingest or inject yourself with any creature's blood to regain 2d4 hit points. If the creature is magical in nature, gain advantage on the next spell save or spell attack you roll.
You cannot use this feature again until you complete a short or long rest.
Magic Devouring
At 14th level, when you make a successful saving throw against a spell, the nanites in your synthetic blood erupt momentarily to absorb the magic that holds together the spell or effect. Whatever benefits you gain from your successful saving throw are also granted to any adjacent creatures.
Additionally, if the saving throw you succeed is against a spell that deals damage, you may make a spell attack to attempt to direct all damage you do not take back onto the caster.
Molecular Assimilation
At 18th level, the nanotech robots in your blood have learned to replicate on a molecular level. You may spend 6 sorcery points when using your Force Spell feature to automatically achieve the maximum effect the spell is capable of at its base level. Additionally, if you die, as long as your head remains your body will be restored in 1d4 days, and you will be revived at half health. Finally, when dealing damage with a spell, if you cause a target to fall to 0 hit points, a swarm of nanotech robots will disassemble the target and leave no trace of its existence, healing you 1d12 in the process.
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