College of the hand

Blessed by vecna the collage of the hand is capable of minipulating the dead to do as they wish, conjuncting forth swarms of undead and keeping them alive is what they do. Despised by there other collages they are usually outcast and left to fend for themselves by most other bards, however they can be a force to be reckoned with when a collage of the hand becomes strong enough. 

Bonus Proficiencies

When you join the College of the hand at 3rd level, you gain proficiency with medicine and history, in addition you have adv to all intelligence checks to recall Information about undead. 

Words of the whispered

Also at 3rd level, you learn how to use your talents for necromancy to recall the words of the whispered Lord himself, as a bonus action you may attempt to speak the words to a creature of your choice within 60ft. The creature must make a Wisdom saving throw against your bard spell save DC, on a failed saving throw the creature takes necrotic damage equal to one roll of your bardic dice and is frightened of you for 1 min, it may remake the save at the end of each of its turns.

Alternatively, when you target an undead with this ability you may choose to heal them. Using the dark secrets to heal the undead, roll your bardic inspiration dice, you heal the targeted undead for the number rolled + half your level in this class. 

Undead nature

Starting at level 6 you gain resistance to necrotic damage. 

Additionally, undead have difficulty harming you. If an undead targets you directly with an attack or a harmful spell, that creature must make a Wisdom saving throw against your spell save DC (an undead needn't make the save when it includes you in an area effect, such as the explosion of Fireball). On a failed save, the creature must choose a new target or forfeit targeting someone instead of you, potentially wasting the attack or spell. On a successful save, the creature is immune to this effect for 24 hours. An undead is also immune to this effect for 24 hours if you target it with an attack or a harmful spell.

Necromantic master

Starting at 14th level, when you may attempt to take control of undead with a cr equal to half your level rounded up, to do this you just use and action to attempt to take control of one undead within 60ft of you. The creature must make a wisdom saving throw against your bard spell save DC, on a failure the creature becomes under your control, keeping its own init and acting independently from you but under your command. It remains likes this for 24 hours.

On each of your turns, you can use a bonus action to mentally command any creature under the effects of this ability if the creature is within 120 feet of you (if you control multiple creatures, you can command any or all of them at the same time, issuing the same command to each one). You decide what action the creature will take and where it will move during its next turn, or you can issue a general command, such as to guard a particular chamber or corridor. If you issue no commands, the creature only defends itself against hostile creatures. Once given an order, the creature continues to follow it until its task is complete.

You may use this feature a number of times equal to half your proficiency modifier however you may only ever have 2 undead under your control at once.