Soul Fighter

These fighters have unlocked the way to destroy the souls of their enemy's and exploit it, I hope you dnd fans like it.

Final Blow

When you are fighting a creature (if you are unsure about if the creature has a soul, read that creature's description, like a specter has a soul but a zombie does not, and for this subclass when I say soul it also means spirit) and it is at halve of it's health you can use your bonus action to power up one of your attacks and make it deal 3d6 necrotic damage and 3d6 radiant damage, however if you use this on a creature that has no soul, then all of its attacks deal 2d6 extra to you and it heals for 30 health.

Soul Gamble

You can sacrifice 1/5th of your soul in return you get 1/2 of your total hp back and you get 2 action surges that you can use anytime. Now roll a percentile and look at the chart below to see what happens

001-020: You feel exhausted from using all of your power, you now have 2 levels of exhaustion and you have a -2 penalty to your intelligence and wisdom until you take 3 long rests without being disturbed

021-050: You have to make a dc 22 intelligence saving throw or you attack the nearest creature and you do this until you fall unconscious, and you deal 4d6 more damage during this time, and you suffer the effects from the 001-020 percentile. exhaustion does not take effect until after you fall unconscious.

051-99: from your souls that you have destroyed (killed) choose the strongest and they appear, they have the same stats and the only difference between looks is that these creatures are translucent and they start attacking your ally's and completely ignore you. You also suffer the effects of the previous percentiles.

100:All of your stats permenently have a -2 to all of your stats and you have amnesia for 3 weeks. You always think that you are in a battle arena during this state. You also suffer the previous effects.

Final Blow Upgrade

Final Blow now works on creatures with no souls and they don't heal from it but they still get to do the extra damage. However you are not effected by that extra damage, only your ally's are effected by it.

Soul Defender

You have resistance to cold and necrotic damage and your AC is increased by 2.

Slice n Dice

You have advantage on all attacks against creatures with souls and you deal 3d6 more damage ( your choice of damage). Also, when you are attacking a creature, you only need to deal 150 damage to kill a creature (only you) by crushing their soul. Also, any contract that includes selling your sell only go in your favor (if you sell your soul for 10,000 gp, you get that gp without losing your soul, that dealer might know this). When you slay a humanoid, you can turn their soul to do your bidding and make it a specter ( you can have 15 specters at a time).