The Crimson Mistress

Your patron is a being of pure blood and slaughter, your acceptance of her pact will grant you unsettling abilities like no other

All Is Blood

Starting at 1st level, your patron has given you the ability to harvest and reuse the life blood, called essence, of living creatures.

Whenever you deal damage to an enemy with a weapon, a spell from this class, or you lose hit points, you gain 1 essence. This feature has no effect on undead or constructs.

You may only gain an amount essence equal to your proficiency bonus from this feature per round and you lose all essence on a short or long rest.

And Blood Is Power

Also at 1st level, you can use your accumulated essence to bolster your abilities.

You have gained access to Crimson Consumptions. All Consumptions cost essence, shown next to their name in parenthesis, which is consumed on use. You can only use consumptions once a turn. You start with 3 Consumptions, described as follows:

Blood Letting (2): When you make an attack against an un-injured creature, gain advantage on the attack.
Infused Healing (3): When you heal someone over their maximum hit points, turn half the excess healing (rounded up) into temporary hp.
Heightened Pulse (4): When you are subjected to a Strength or Dexterity saving throw, you may add your constitution modifier to the roll.

Essense Shield

Starting at 6th level, your patron has shown you the connections between life and magic, increasing your ability to gather essence.

Whenever you expend a spell slot, you gain essence equal to its level and gain twice that many temporary hit points. The temporary hit points last until you finish a short or long rest.

Nectar of the Scarlet Goddess

Starting at 10th level, The Crimson Mistress has shared with you her ability to transform the essence you’ve been collecting into health and resilience.

As a bonus action, regain hit points equal to 3 x your proficiency bonus.
When you are hit with an attack, you may use a reaction to gain 3 AC until the end of your next turn.
You can use this feature a number of time equal to your constitution modifier and regain all uses on a long rest. Additionally, you may use your And Blood is Power feature twice a turn instead of once.

Deific Dominion

Starting at 14th level, you have become a pure conduit for your mistress’ rage.

As an action, you begin to channel your patron’s power directly. For 10 minutes, you gain 2 essence at the start of each of your turns, All is Blood has no limit on essence gain, you have no limit on how often you can use your And Blood is Power feature.

After 10 minutes have passed, you return to your normal state, expend all essence, gain 1 level of exhaustion, and choose one of the following effects:

Regeneration: Gain temporary hit points equal to half the essence expended. These hit points last until you finish a short or long rest.
Infusion: All creatures within 30 feet of you gain temporary hit points equal to half the expended essence. These hit points last until you finish a short or long rest.
Expulsion: All creatures within 30 feet of you make a Dexterity saving throw against your spell save DC. On a failed save, creatures take a d8 of damage multiplied by a number equal to the essence expended. On a successful save, creatures take half damage.
You may only use this feature once and regain the ability to do so after finishing a long rest.

The Crimson Mistress Expanded Spells

As a warlock of The Crimson Mistress you get access to many non-warlock spells.