Necroblade

the Necroblade uses necromantic powers to enhance their abilities in battle allowing them to fight after death and bring themselves back from near-death 

life after death

starting at level 3 when you pick this class you can wive the powers of life even after death. when you drop to 0 hit points you can choose to sacrifice all death-saving throws to rise as a living death fighter. while in this living death phase you gain half your max hit points and can not be healed until you take a short rest in which case you have 1 hp when these hit points reach 0 you are dead and must be revived you cannot use this feature again till you take a long rest you also gain a blessing from the table below.

 

 

necrotic blessing
d6	Gift
1	your skin looks unnaturally pale and feels as cold as ice
2	ever so often green, blue, or purple light glows and then fades throughout your veins
3	one of your limbs looks thin and decoyed
4	your eyes glaze over and become pure white
5	your body smells like It has been dead for weeks
6	you gain a wound that never seems to heal

resilient

at 3rd level, you gain resists to poison and necrotic damage 

regeneration

at 7th level, you gain the ability to siphon some energy from your enemies. when in the living dead state you gain the ability to heal for half the damage dealt rounded down.

additionally when in the alive state you can give a creature that at 0 hit points some of your health equal to your con modifier (minimum of 1).

imbue

at 10th level, you touch one weapon and necromantic energy follows into it the weapon deals a 1d6 necrotic damage and the weapon is classed as magical to overcome resistance 

unsettling pressions

starting at level 15, you can choose creatures equal to your con modifier (minimum of 1) them creatures must make a successful Wisdom saving throw or become frightened by you for a minute, or until they take damage the DC equals 8+proficiency bonus+con mod you can use this feature equal to your con modifier and regain all uses on a long rest.

spirt of dread

at 18th level, your mastery over undead has given you dominion over the souls of others. when you kill a creature you summon a wraith from its remains the wraith is friendly to you and your allies and takes its turn after you the wraith last one hour till it disappears 

additionally, if you are within 5ft of the wraith when being targeted for an attack you can use your reaction to sacrifice the wraith to impose disadvantage on the attack