The Bloodletter

 You made a blood contract with a being that feeds of other's life force in return of youth and power. It might be a partcularly powerful succubus or vampire.

 Although the arrangement makes you more powerful as you gain characteristics from your patron It also drains your life essence, reckless use can make you extremely ill, you may also start to develop a thirst for blood or life essence forcing you to drain others from their life.

Expanded Spell List

The Bloodletter 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.

Bloodletter Expanded Spells

Spell Level	Spells
1st	inflict wounds, sleep
2nd	blindness/deafness, aid
3rd	blink, life transference
4th	phantasmal killer, polymorph
5th	animate objects, contagion

Dark Rebirth

Starting at 1th level, you were reborn as a new being by the contract you struck with your patreon, you gain the following features:

Bloodsynthesis

When you would gain an invocation, you can chose to learn a bloodsynthesis instead (see the list of bloodsyntheses below):

• Empower: When casting a spell using a spell slot you can upcast It one level higher by spending 2 warlock hit dice (you can't use this feature on spell slots of level 6 or above).

• Escarlet Missile: As a bonus action you cast magic missile  by spending 3 warlock hit dice, It does piercing damage instead of force.

• Blood Shield: You cast shield by spending 1 warlock hit dice.

• Raise Ghoul: (Requirement: 5th level) You learn the spell animate dead but you can only chose corpse, you can do so by spending 3 warlock hit dices, you can't control more undead than your warlock spell slot level + 1.

• Drain: (Requirement: 5th level) You can cast vampiric touch once without expanding a spell slot, when you hit with it you regain 1 warlock hit dice instead of hit points and you can't concentrate on it. You can't do so again until you finish a short rest.

Energy Recycling

Whenever you use a warlocks spell slot you regain hit points equal to the slot level + your charisma modifier. You can also spend warlock hit dices in order to regain warlock spell slots, doing so costs 1 hit dice per slot level.

Fabricate Essence

Starting at 6th level, your patreon gives your blood unusual healing properties. You gain the following features:

Autofagy

You can instantly gain 2 warlock hit dices by gaining 1 level of exhastion. You can't use this feature while having a level of exhastion.

Hemolisis

When you take damage you can spend your reaction to burn any type of hit dice up to 1/5 of your warlock level (rounded up) and recover that many hit points + your constitution modifier for every burnt dice. Once you use this feature you can't do so again until you finish a short rest.

Desperate Reanimation

Starting at 10th level, your blood has become less dependent on you for performing it's functions.

When you would make a death roll you gain 1 warlock hit dice, than, you can burn any number of hit dice up to half your warlock level and recover hit points equal to the number of burned dices + your constitution modifier for each dice burned.

Once you use this feature you can't do so again until you finish a short or long rest.

 

Hemorragic Destruction

Starting at 14th level, your control over blood is so strong that you can sap It in large quantities while causing severe damage to your unfortunate victims.

As an action you can force a creature you can see within 30 feet of you to make a constitution saving throw against your spell save DC, on a failed save It takes 10D10 necrotic damage and you regain 4 warlock hit dices, on success it takes half as much damage and you regain only 2 hit dices.

Once you use this feature you can't do so again until you finish a long rest.