Your limbs ooze with poison, and your unarmed strikes are more poisonous. 

Whenever you make an unarmed strike, deal 1d6 + your constitution modifier poison damage.

You have darkvision 60ft.

As a bonus action, you may rip out a vital organ, limb, or various other parts of your anatomy. You do this by rolling any amount of 'Harm' die. The amount of 'Harm' die you have is equal to your proficiency bonus. You regain all spent harm die after a long rest. Each harm die is 1d4. The amount that you roll from the harm die deals that much damage to you. You then choose one of the following to increase by the amount rolled, next time you would roll one; checks/saving throws, attack rolls (including spell attacks), or damage rolls. E.G. Josh decides to roll 3 of his 4 harm dice as a bonus action. He deals himself 7 damage, and chooses checks/saving throws. Next turn, he makes a saving throw to avoid being poisoned and adds the 7 to his roll.

Zurkemuthlings are designed from the ground to halt all enemy attacks in its tracks with the Zurkemuthling's raw disgust

You gain the ability to, as a reaction, spend up to one 'Resilience Point' to reduce the damage you are taking by 1d8 + your proficiency bonus. The amount of 'Resilience Points' you get is your proficiency bonus + constitution modifier.

When determining your ability score, increase constitution by 2 and another ability score by 1.