Roguish Archetype: Shadowsworn

There's an old thieve's tale told in the seediest pubs and back alleys of the world's great cities- the Nightmaiden, an entity of strange and fearful powers, that is said to appear at midnight on the new moon to offer those who intrigue it power and knowledge in exchange for a promise and their shadow. You didn't believe the stories until one fateful night. As one sworn to serve the Nightmaiden, you learn to melt into and control the shadows around you to your own advantage.

Shadowsworn Lore

When you choose this archetype at 3rd level, the Nightmaiden imparts on you knowledge of how to manipulate the shadows around you to your benifet. You learn the minor illusion and shadow dagger cantrips. Charisma is your spellcasting ability for these cantrips.

Additionally, you gain proficiency in either the Arcana or History skill (your choice).

Mantle of Darkness

At 3rd level, you've learned to manipulate the darkness around you. You have dark vision to a range of 60 feet. If you have darkvision from another source, the range increases by an additional 30 feet.

Additionally, while you are in dim light or darkness, add your Charisma modifier as a bonus to all Dexterity (Stealth) and Dexterity (Slight of Hand) checks (minimum of +0).

Shadow Accompolice

Starting at 9th level, you can pull a fragment of a slain person's soul from their body and bind it with their shadow to serve you. When you slay a humanoid, you can cause a shadow to rise from the corpse, the statistics for which are in the Monster Manual. When the shadow appears, it gains temporary hit points equal to half your rogue level. Roll initiative for the shadow, which has its own turns. While the shadow is within 120 feet of you, you can communicate with it telepathically. It obeys your telepathic or verbal commands and gains a bonus to attack rolls and Dexterity (Stealth) checks equal to your charisma bonus (minimum of +0).

The shadow remains in your service until you complete a long rest, at which point it dissipates.

Once you've bound a shadow in your service this way, you cannot do so again until you finish a long rest.

One with the Shadows

Beginning at 13th level, you've learned to not only hide in but become part of the darkness. While you are in darkness you become invisible to creatures with darkvision. Additionally, while you are in dim light or darkness, you can use a bonus action to teleport up to 30 feet as your destination is also in dim light or darkness.

Nightmaiden's Embrace

Starting at 17th level, you can weave the shadows around you into corporeal bindings for your enemies. After taking an attack action against a creature in dim light or darkness, you can use a bonus action to have them make a Dexterity saving throw with a DC of 8 + your Charisma modifier + your proficiency bonus, blinding and restraining them for 1 minute on a failed save. A creature bound by the shadows can use its action to make a Strength check against the original DC. On a success, the target is freed. You can use this feature a number of times equal to your Charisma modifier (minimum 1). You regain all expended uses when you finish a long rest.

Spells

Shadow Dagger

Conjuration cantrip

Casting Time: 1 bonus action

1 bonus action Range: Self

Self Components: V, S

V, S Duration: 1 minute (concentration)

You condense and shape shadows into a short, black blade in your hand. This magic dagger lasts until the spell ends. It counts as a simple melee weapon with which you are proficient. It deals psychic damage equal to 1d4 + your spellcasting ability modifier and has the finesse, light and thrown properties (range 20/60).

If you drop the weapon or throw it, it dissipates at the end of the turn. Thereafter, while the spell persists, you can use a bonus action to cause the sword to reappear in your hand.