The Blood

Blood, cursed blood, he drinks of it nightly, and through our pain he is sated, through our blood, our cursed blood.

- Cursed Blood, Antuin Gordair

You have made a pact with a creature whose desire is your blood. While not necessarily evil, your patron does not care for your pain, all it desires is your blood. It feeds on your blood when you call upon its boons but it does not wish for your death; were you to die they would lose their main source of potent blood. The boons your patron grants you are intended to defend and protect you, though you shouldn't mistake this for care, they only care for you as a source of blood.

Your patron may be a powerful Vampire lord, or a lich who needs your blood for magical components, or any entity that would drink or otherwise utilise your blood.

Expanded Spell List

1st-level Blood feature

The Blood 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.

Blood Expanded Spells

Spell Level	Spells
1st	bane, inflict wounds
2nd	acid arrow, protection from poison
3rd	bestow curse, haste
4th	greater invisibility, stoneskin
5th	contagion, dominate person

Emboldened Blood

1st-level Blood feature

Your patron has need of your blood and so enhances your body's natural healing ability. When you finish a short rest, you regain a number of hit points equal to your Warlock level multiplied by your Constitution modifier. You also regain a number of hit dice equal to your Warlock level divided by 4, rounded up (minimum of 1).

Rules Clarification

For the sake of this ability, hit dice are spent before this feature takes effect, thus allowing for a small portion of hit dice expended during the short rest to then be recovered.

Empowered Blood

1st-level Blood feature

Your blood has been strengthened. When you hit a creature with an attack, you can expend a number of hit dice up to half your Warlock level. If you do so, you can add the expended hit dice to the damage roll.

The hit dice do not need to be from the same class nor the same type. For example, a level 5 multiclass character, Warlock 4/Barbarian 1, could expend 1d8 and 1d12, adding both to the damage roll.

Cursed Crimson

6th-level Blood feature

Your patron has cursed your blood to preserve it for itself, harming anyone who would try and drain you of your red gold. When a creature hits you with an attack while within 10 feet of you, you can use your reaction and expend a hit dice to force the creature to make a Constitution saving throw against your spell save DC. On a failure, the creature takes 2d8 acid damage, or half on a success.

If a creature ingests your blood, it immediately takes 24 acid damage. This does not expend a hit die.

Sanguine Sacrifice

6th-level Blood Feature

You are now able to sacrifice even more of your vitality for your patron's powers. When you would expend Hit Dice for a Blood feature, you can roll 1d6 and use it instead of expending a hit die. When you do so, reduce your current hit points by half the number rolled on the d6.

System Purge

10th-level Blood feature

Your patron has granted you the ability to flush your own and others' systems of foreign effects. At the start of your turn, you can expend a hit die. When you do so, roll the hit die and consult the table below, you can end one condition on a creature within 60 feet of you or yourself based on the number rolled. You can instead choose to end an effect of a number lower than the number rolled. If you expended a Warlock hit die for this feature, the target also regains hit points equal to the number rolled. If you use this ability, it expends your action.

Hit Die Result	Condition
1-2	Deafened
3-4	Blinded
5	Stunned
6	Poisoned
7	Charmed
8	Frightened
9	Paralyzed
10	Unconscious
11	Petrified
12	Exhaustion

Rules Clarifications

Though a creature that has 0 hit points is technically unconscious, removing the effect would not heal the creature. At the GM's discretion, removing the unconscious effect may stabilise the creature.

Using this feature expends an action but does not require you to be able to use your action to use this feature. As such, this feature can still be used even if you are incapacitated. Effects and abilities that grant additional actions, such as a Fighter's Action Surge, still grant an additional action.

 

Blood for Blood

14th-level Blood feature

Your pact has not only strengthened your own natural healing abilities but also allows you to drain others of their life force. When a creature you can see that is within 120 feet of you is reduced to 0 hit points, you gain temporary hit points equal to your Warlock level.

Additionally, you can use your reaction to gain an additional hit die of the same size as the creature's hit die. This additional hit die can be used in place of your own for any ability or feature that uses hit dice, except for during a short rest. You can have a number of other creature's hit dice equal to your Charisma modifier (minimum of 1).

 If you end a long rest with no additional hit dice, you gain a d12 as an additional hit die.

If the creature has no blood, such as a construct or most undead, you do not gain this benefit.

Changelog

2.0 - Emboldened Blood adjustments. In order to streamline and unclutter the ability, both effects occur at the end of a short rest, after the effects of the short rest have taken place.
Blood for Blood changes. These changes were made to reward defeating larger more imposing enemies while also lessening the effectiveness of the Bag of Rats trick, though it's not totally inneffective so get wacking.
Cursed Blood name changed to Cursed Crimson.
System Purge rework. Being able to completely remove nearly any condition from yourself for very little cost and repeatedly was far too powerful and it was deemed that a more finite limitation wouldn't be enough to balance this so it was reworked to also have effect based on the hit die expended.
Added Expanded Spell List. You know, that thing all Warlock subclasses have... woops
Added Sanguine Sacrifice. The subclass was fitting the niche I was wanting it to fit, however it suffered significantly in longer fights. As such, I wanted to add something that allowed prolonged fighting, though still with some cost and lessened strength.