Base Class: Sorcerer
You were granted where hit with power word kill, but somewhere it malfunctioned or a lich trained you for some reason or other. Although now you practice death magic and have a lot of death power and grow around making a hoard of zombie's and skeleton's. You seek power and respect in the criminal world or in the acolyte world.
Death power
Starting at level 1 you get 1d4 extra on necrotic damage rolls and advantage on attack rolls. You also get a 1d4 heath when you have a short rest and a 1d6 extra on long rests.
At level 5, 7, 17, 19 it improves by an a 1d4 on short rests and 1d6 on long ones.
Spirit
You get summon undead spirt as a bonus action cantrip.
Minions
You get a zombie hoard. Roll a 1d20 to see how many zombies you get. You also can on a twenty switch 10 of you zombies for a werewolf.
You get an extra 1d20 per level and a 1d100 at level 19 and 20
Necrotic power
At level 6 you can cast all 1st to 3rd level necrotic damage dealing spells as a cantrip.
At level 14 it becomes 1st to 4th. At level 17 1st to 7th and at level 20 1st to 9th level necrotic damage dealing spell as a cantrip.
Lesser power of death
You cast finger of death without expending any spell slots but you lose 50 Hp and if you survive you have 2 levels of exhaustion.
On level 13 it changes to 1 level of exhaustion and on 15 none and on 16 you only lose 10 Hp but on level 17 you heal 10 whenever it kills and on level 20 you heal 100 Hp when you kill some with death.
Greater Power of darkness
You cast power word kill without expending any spell slots but you lose 50 Hp and if you survive you have 2 levels of exhaustion.
On level 15 it changes to 1 level of exhaustion and 16 you only lose 10 Hp but on level 17 you heal 10 whenever it kills and on level 20 you heal 100 Hp when you kill some with power word kill.
Power over all
A radius attack which deals 5d100 damage but can only be done once ever short rest.
Zombies
You can change anyone under 50 Hp into a zombie instantly. And every day you role a 1d20 and gain that many zombies and on a 20 you get 4 beholder zombies and on a 10 2 Ogre zombies.