ASI & FEATS [4, 8, 10, 12]
Level 4 : Aberrant Dragonmark (-6 Max hp | Boon of Irresistible Offence )
Level 8 : Skulker
Level 10 : Alert
Level 12 : Sharpshooter

Faction Boon
Toxin of the Unwoven : You are rendered immune to all magical detection and scrying, and cannot attune to magic items with the Spellcasting trait.

In additiona, your blood becomes toxic to magic and any other supernatural effect. When you hit a creature that casts spells, relies on mana (DM's discretion), or is otherworldly in nature, they take 1d6 force damage.
This damage increases to 1d10 against creatures with the Spellcasting trait. Additionally, you have resistance to Force damage and advantage on saves against magical effects.

Magical Feedback : Your anti-magic blood intensifies. Your force damage on hit increases to 2d6 (or 2d10 vs Spellcasters).

Additionally, when you are targeted by a spell you succeed on saving throw against or a spell attack misses, the caster takes Force damage equal to your Constitution modifier + your proficiency bonus. This effect also occurs when you end concentration or end other magical effects to the caster. 

Nulled Point : You gain a resource called Nulled Points equal to your proficiency bonus, you can use the points to do the following effects;

As a reaction to hitting a creature with a weapon attack, you may expend 1 Nulled Point to cast Dispel Magic on the target at a level equal to half your level (rounded down). Constitution is your spellcasting ability for this.

Additionally, whenever you roll a natural 20 against a creature, you can expend your reaction to expend 1 Nulled Point to disable 1 supernatural or magical feature that creature has for 1 round.  

You regain all expended Nulled Points on a long rest.

Nameless : Your identity is scrubbed from all reality. Any record, memory, or magical means of identifying you registers only as ▇▇▇▇▇▇.

All bounties, divinations, or written accounts referring to you are erased. You may choose a new name, known only to you and your allies.

Additionally, you can cast Modify Memory with a range of 60ft as an action once per long rest, but only targeting memories related to your identity, actions, or presence. Constitution is your spellcasting ability for this and the spell is cast at a level equal to half your level (rounded down) and does not require concentration.

You may now expend 1 Nulled Point as a reaction whenever you are under any supernatural or magical effect and end it, becoming immune to that effect for 1 hour.

Manual of Quickness of Action
The Condemner (Exalted)
The Remote of Old Man Consequences