Path of The Dread

All barbarians toe the line between life and death, but few choose to embrace death fully.  Those that do follow the Path of the Dread.  The Path of the Dread is a morally difficult road to walk.  Those that follow it bind the spirits of their enemies to their service either in knowledge or in body.  Reeking of death and decay, these barbarians will stop at nothing, even undeath, to slay any who oppose them.

Unholy Strikes

Starting at 3 level when you choose this path, you can channel the fury of the dead into your weapon strikes.  While your raging, the first creature you hit on each of your turns with a weapon attack takes extra necrotic damage equal to 1d6 + half your barbarian level. 

Chained Shade

Beginning at 6 level, you can bind the souls you slay for a short time.  While raging, when you reduce a humanoid’s hit points to 0 you can cause its body to reanimate as a zombie under your control.  The statistics for which are in the Monster Manual.  When the zombie appears, it gains temporary hit points equal to half your barbarian level.  The zombie has its own turns and takes its turns immediately after yours.  It obeys your verbal commands and gets a special bonus to attack rolls equal to your proficiency bonus.  If you do not give any commands, the zombie will only defend itself from hostile creatures. 

You can have a number of these zombies under your command equal to half of your proficiency bonus rounded up. 

When your rage ends, all the zombies under your control immediately perish.   

Call of the Accursed

At 10 level you can channel your necrotic powers into a corpse to compel it to speak.  When you do so, you can cast Speak with Dead without somatic or material components.  When casted with this feature, the spirit is compelled to answer honestly. 

You can use this feature a number of times equal to your proficiency bonus per long rest.

Undying Warrior

You gain immunity to necrotic damage, and your hit point maximum cannot be reduced.

Additionally, when you are reduced to 0 hit points but not killed outright, you regain half of your hit point maximum.

After you have used this feature, you cannot use it again until you have finished a long rest.