The Parasite

Gain parasitic gifts granted to you by your patron.

Expanded Spell List

The Parasite lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you. 

Parasite Expanded Spells

Spell Level	Spells
1st	inflict wounds, ensnaring strike
2nd	bestow curse, augury
3rd	life transference, see invisibility
4th	death ward, polymorph
5th	contagion, skill empowerment

Parasitic Touch

Starting at 1st level, you have a pool of d6's equal to your proficiency bonus (this increases to d8's at 10th level). Once per turn, whenever you deal damage to a target, you can expend up to two dice from your pool and add that to the damage roll as either poison or necrotic damage.

If you use poison damage, the target must make a CON save equal to your spell save DC or become vulnerable to poison damage for 1 minute. This bypasses poison resistances but not immunity to poison. They make this save at disadvantage if you use a melee attack.

If you use necrotic damage, you gain temporary hit points equal to the roll until you use this feature again or take a long rest.

You regain all dice on a short or long rest.

Internal Writhing

Starting at 6th level, you gain the ability to infest creatures. As an action when you are within 5ft of a creature, you can have them make a CON save equal to your spell save DC, or have them become infested. Once a creature becomes infested they have disadvantage on all attacks and ability checks, and take 1d8 + charisma modifier necrotic or poison damage(healing you for half the amount) every round at the end of your turn. This continues to affect the target until either they succeed the save or if you fall unconscious ending the effect. Target must repeat the save at the end of their turn, on a success they are no longer infested. This feature doesn't affect constructs or elementals.

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

Sweet Sickness

Starting at 6th level, you gain resistance to poison damage and have advantage on all saving throws against diseases and being poisoned.

Life Leach

Starting at 10th level, when you kill a creature of CR 5 or higher while you are within 5ft of them or they die while they are effected by Internal Writhing, you can drain their essence to instantly gain the benefits of a short rest, and can end 1 condition on yourself, and heal a number of hit points equal to half your level.

You can use this feature once per long rest.

Walking Husk

Starting at 14th level, when a creature that is or was effected by Internal Writhing dies, you can raise its body from the dead as an undead servant as an action(this doesn't work on constructs, elementals or previous undead). They are completely loyal to you and will do as you ask to the best of its ability. For the purposes of combat the husks act at the end of your turn or they can have their own initiative. You can only have a number of husks equal to your proficiency bonus under your control, if you try to control more than your proficiency bonus, the oldest husk then dies unless you choose another to die instead. You can only make a husk of a creature of CR 15 or lower.

When the creature is risen from the dead it keeps its stats but has its max hit points halved and can only be healed by necrotic damage.

The husk no longer has access to any spell casting when it dies but it keeps any class features, racial features, and innate abilities it had. If it had legendary actions and legendary resistances, it no longer has them.

You also gain immunity to poison and disease.