Farblood

Your powers spawn from the powerful and terrifying Far-realm. Your ancestors may have entwined themselves with vile mutation or were corrupted by the warping of the realm of flesh and monsters and madness. Either way your mind and body are a wonder to medicine and magic combined.

Comprehensible madness

Your mind transforms the utterances of the bizarre into comprehensible words.
You are can speak, read and write Deep speech as well as one other language of your choice

Weird biology

The mutant, alien power within you boils in your body and mind with twisting intent. When you choose the Farblood origin at first level you become capable of morphing flesh as you break it.
As a bonus action, when you strike a creature with a damage cantrip you may expend a sorcery point to restore HP equal to the damage dice of that cantrip.

Malicious wounds

Starting at 6th level, when you are struck with a melee weapon your attacker views your wounds and are horrified by what they see. You can use your reaction to expend any number up to half of your sorcerer level in sorcery points to deal psychic damage.

You deal 1d10 Psychic damage for every sorcery point you expend.

Eye of the void

At 14th level, you gain the ability to sense anything disturbing space around you as the bizarre nature of your power opens many invisible ways to detect the area that surrounds you.

You gain blindsight and tremor sense  up to 60 ft and can see through magical darkness.

Disturbing biology

Beginning at 18th level, your body becomes distorted and strange. Due to the twisted nature of your body you become immune to critical hits and sneak attack damage. At the sight of this powerful strangeness others will cower in this nightmarish sight.

Upon resisting a critical or sneak attack your attacker must make a WIS saving throw equal to your spell save or be paralyzed until the end of your next turn.