Nightbringer

Many fear the dark and the horrors within it, but not you. Darkness may bring terror, but it also offers sanctuary. Your magic manipulates the very essence of darkness itself. You wear the night itself as your cloak and wield shadows themselves as weapons. 

Level 3: Eyes of the Dark

Your eyes have become accustomed to the deepest gloom. You have Darkvision out to a range of 300 feet and can see through magical Darkness. In that radius, you can see in Dim Light as if it were Bright Light and in Darkness as if it were Dim Light.

As a Magic action, you can magically share the Darkvision of this feature with willing creatures you can see within 10 feet of you, up to a number of creatures equal to your Charisma modifier (minimum of one creature). The shared Darkvision lasts for 1 hour. Once you share it, you can't do so again until you finish a Long Rest, unless you expend a spell slot of any level or 1 Sorcery Point to share it again.

Level 3: Cloak of Night

The shadows cling to you and protect you from harm. While you are not wearing armor, your base Armor Class equals 10 plus your Dexterity and Charisma modifiers. Moreover, while you are in Dim Light or Darkness, your Armor Class increases by 2. 

Bleak Veil. As a Magic action, you exude a 10-foot Emanation for 1 minute. Within the Emanation, Bright Light becomes Dim Light, and Dim Light becomes Darkness.

Nightfall.  When you deal damage to a creature with a spell, you can spend 1 Sorcery Point to place a 10-foot Sphere centered on the target (no action required). Within the Sphere, Bright Light becomes Dim Light, and Dim Light becomes Darkness. This effect lasts until the start of your next turn.

Level 6: Shadow Sever

Your mastery of manipulating shadows has culminated into a new ability, allowing you to sever a creature from their shadow. As a Bonus Action, choose one target you can see within 30 feet of you. The target's shadow detaches from them for 1 minute or until you end the effect. While without it's shadow, the target suffers the following effects:

• When you deal damage to the target, it takes additional Psychic damage equal to your Proficiency Bonus plus your Charisma modifier. Additionally, if the target was in Dim Light or Darkness, it must succeed on a Wisdom saving throw, or become Frightened of you until the start of your next turn. 

If the target dies while it has it's shadow severed, the shadow flows into you, invigorating you. You regain Hit Points equal to your Sorcerer level plus your Charisma modifier (minimum of 1 Hit Point). 

Once you have used this feature, you can't do so again until you finish a Long Rest, unless you spend 1 Sorcery Point to restore your use of it (no action required). 

Level 14: Shadow Affinity

When you cast a spell that targets or affects creatures in Dim Light or Darkness, that spell is empowered. The targets have Disadvantage on their saving throw against the spell, and if you make an attack roll, reduce the number required to score a Critical Hit on a D20 Test by 1. 

Level 18: Nightbringer

As a Magic action, you can spend 6 Sorcery Points to transform yourself into a spectral incarnation of shadow and night. In this form, you gain the following benefits:

• You have Resistance to all damage except Force and Radiant damage.
• You can move through other creatures and objects as if they were Difficult Terrain. You take 5 Force damage if you end your turn inside an object.
• Your Bleak Veil and Nightfall features improve to Bleak Veil: Evernight and Nightfall: Evernight.
• Your Shadow Sever feature improves to Shadow Sever: Grim Harvest.
• You gain the use of Shadestep.

You remain in this form for 1 minute. It ends early if you are Incapacitated, if you die, or if you dismiss it (no action required).

Evernight. While in your Nightbringer form, the Emanation created by your Bleak Veil, and Sphere created by your Nightfall features become magical Darkness. Darkvision can’t see through it, and nonmagical light can’t illuminate it. 

Grim Harvest. While in your Nightbringer form, when you use your Shadow Sever feature, the range increases to 60 feet. Additionally, you can sever the shadows of all creatures you choose within range, rather than just 1.

Shadestep. While in your Nightbringer form, as a Bonus Action, or as a Reaction when you take damage, you can magically teleport to a space 120 feet away that is in Dim Light or Darkness.