College of Shadowfell

Bards of the College of the Shadowfell specialize in the study of
that realm, gleaming great knowledge of shadow magic in the
process. These bards are few in number and their study is far
harder than most, for knowledge of the Shadowfell is hard to
come by. These bards occasionally gather in great libraries to
share their knowledge, but most of their time is spent out in the
world, looking for any glimpses of knowledge that might lead
them to their goal.
These bards generally do not perform music, and are instead
more inclined to creating stories and manufacturing histories,
with most of these stories ending as dark as the realm they study.

Shadow Lore

When you join the College of Shadowfell at 3rd level, you gain proficiency with medium armor, martial weapons, and the stealth skill. In addition to this, you gain a fighting style.

Dueling

When you are wielding a melee weapon in one hand and no other weapons, you gain a +2 bonus to damage rolls with that weapon.

Eldritch Warrior

You learn two cantrips of your choice from the Warlock spell list. They count as bard spells for you, and Charisma is your spellcasting ability for them. Whenever you gain a level in this class, you can replace one of these cantrips with another cantrip from the Warlock spell list.

Two-Weapon Fighting

You can add your damage bonus to your off hand attack when you use Two-Weapon Fighting

Shadow Stride

Also at 3rd level, you can lace your words with shadow magic to grant an ally unnatural speed. When a creature that has a bardic inspiration die from you begins to move, it can choose to roll that die and add 5 times the number rolled to its speed until the end of its turn. For the same duration, every 2 feet of its movement in dim light or darkness only costs 1 foot of speed.

Shroud of Darkness

Starting at 6th level, whenever a creature rolls a bardic inspiration die from you, both you and that creature become imbued with shadow magic. Shadows envelop the two of you and until the start of the roller’s next turn,  attacks made against each of you during the duration to be made at disadvantage. In addition to this, you can attack twice, instead of once, whenever you take the Attack action on your turn.

Umbral Body

Beginning at 14th level, you gain the ability to transform into pure shadow. You can cast umbral form at will, without expending a spell slot or material components. When you cast the spell using this feature, you may only target yourself.

Umbral Form: (Casting Time: 1A, Duration: 1 hour, concentration, Components: V,S,M) You transform a willing creature you touch, along with everything it’s wearing and carrying, into an animated shadow for the duration. The spell ends if the creature drops to 0 hit points. While in this form, the target has an AC of 18, its only method of movement is a walking and climbing speed of 20 feet, and it cannot jump or otherwise remove itself from the surface it moves on. This movement is completely noiseless, and allows the target to move up, down, and across vertical surfaces and upside down on ceilings. The target can enter and occupy the space of another creature. It has advantage on Dexterity saving throws, Dexterity Stealth) checks, and is always hidden in darkness. The target can pass through small holes, narrow openings, and even mere cracks, though it treats liquids as though they were solid surfaces. The target can't fall and remains on the surface it was on even when
stunned or otherwise incapacitated. While in the shadowy form, the target can't talk or manipulate objects, and any objects it was carrying or holding can't be dropped, used, or otherwise interacted with. The target can't attack or cast spells.