The Blood Mother

A warlock in the service of the Blood Mother is bestowed a Bloodstone, a powerful artifact forged of blood that grows in power and evolves according to the pact made. As the warlock's pact comes into maturity, so does the bloodstone as it takes on the form of a weapon, a familiar, or a tome that grants supernatural abilities that invoke the might of the Blood Gods.

Bloodstone

The Blood Mother bestows a Bloodstone to her champions, granting powerful boons that empower your pact magic. If your Bloodstone is destroyed or lost, you may forge a new one by performing a Blood Ritual. Performing the ritual requires a sacrifice of enough of your own blood to reduce you to 1 HP. The ritual takes 1 hour to perform and you are fatigued for 48 hours after.

At 1st level, your Bloodstone stores an additional spell slot that can be used to cast a spell from your expanded spell list that you know. This spell slot can be recovered by a long rest.

At 3rd level, the Bloodstone expands its power based on your chosen pact with the Blood Mother.

 

Pact of the Chain

The Bloodstone hatches into a crimson gemstone form of your chosen familiar. As a part of your action, you may form an ethereal, whispy red chain between you and your familiar. While chained to your familiar, you may expend your Bloodstone spell slot as a bonus action to physically swap locations so long as you are within 30 ft of each other. Swapping locations with your familiar breaks the tether.

Pact of the Blade

The Bloodstone embeds itself in your body (typically in the shoulder or back of the hand) and conjures a pact weapon of crystalline blood. Whenever you summon your pact weapon, you may expend your Bloodstone spell slot to cast mage armor without material components. Using this ability conjures partial, crystalline armor over your body where the Bloodstone resides.

Pact of the Tome

The Bloodstone attaches itself to the cover of your Book of Shadows, opening to reveal a glowing red eye. Your Bloodstone spell slot may now be used to cast any spell you know. Additionally, you may expend your Bloodstone spell slot to cast any cantrip you know as a bonus action.

Blood Siphon

Shedding blood can replenish your Bloodstone's magical supply. Whenever you deal damage to a creature that has blood with a spell attack or weapon attack, as a bonus action you may force it to make a Constitution saving throw against your spell save DC. On success, the creature suffers no additional effects. On failure, the creature takes an additional 1d8 damage and you recover your Bloodstone spell slot. You may use this ability a number of times per short or long rest equal to your proficiency bonus.

Blood Mastery

Your burgeoning mastery over your Bloodstone has revealed secrets to you according to your pact.

Pact of the Blade

Your embedded Bloodstone draws power from your blood, empowering your strikes with your pact weapon. Whenever you summon your pact weapon, you may use your Charisma modifier in place of your strength or dexterity modifiers for your attack and damage rolls. Additionally, when you make a melee attack with your Pact Weapon you may expend your Bloodstone spell slot as a bonus action to deal 3d8 necrotic damage.

Pact of the Chain

Your connection to your Bloodstone familiar grows, strengthening the tether that binds you. While you and your familiar are flanking an enemy and tethered to each other, the chains of your tether lash out and deal necrotic damage equal to your Charisma modifier every round your enemy starts the round flanked. Additionally, you can expend your Bloodstone spell slot to pull your familiar towards you dealing 3d8 necrotic damage to the flanked enemy as it claws and rips its way through your enemy's body.

Pact of the Tome

Your Bloodstone pierces the veil of time to warn you of imminent magical danger. You may cast counterspell without expending a spell slot or material components once per long rest.

You may expend your Bloodstone spell slot to re-direct the countered spell.

Red Embrace

Your Bloodstone brings you the warmth of the Blood Mother's embrace, buffering you from harm according to your pact.

Pact of the Blade

When you cast mage armor using your Bloodstone, you may add your Charisma modifier to your AC and gain resistance to bludgeoning, piercing, and slashing damage until the spell ends.

Pact of the Chain

While tethered to your Bloodstone familiar, you and your familiar gain temporary hit points equal to half your warlock level, rounded down. These temporary hit points refresh every round that you remain tethered to your familiar.

Pact of the Tome

While your Bloodstone spell slot is not expended, you gain advantage on saving throws against spells and other magical effects.

Matron's Gift

When your Bloodstone has reached the pinnacle of its potential, the Blood Mother rewards you for your diligence and servitude with a powerful transformation according to your pact. This ability lasts one minute. You may use this ability once per long rest.

Pact of the Blade

When you summon your pact weapon, the Bloodstone erupts from where it has embedded itself in your body and clads you in full crimson armor, granting you the power of the Blood Knight which allows you to add your proficiency bonus to your AC whenever you cast mage armor using your Bloodstone. When you deal damage with your pact weapon, you may use Blood Mastery bonus action without expending your Bloodstone spell slot.

Pact of the Chain

You may reel in the chain tethering you to your Bloodstone familiar and physically merge with it, becoming an incarnation of Uul-theg, the Jailer. While in this form, you may tether yourself to an enemy, allowing you to swap locations as if it were your familiar. While tethered to you in this form, your enemy takes necrotic damage equal to your Charisma modifier at the beginning if its turn. Additionally, you may use your Blood Mastery ability on your tethered foe without expending your Bloodstone spell slot.

Pact of the Tome

Your Bloodstone affixes itself to your forehead, granting you the Third Eye of the Sisterhood. While invoking the power of the Sisterhood, you may expend your Bloodstone spell slot to cast a spell from any spell list at your current maximum spell level. Additionally, you may use your Siphon ability as a reaction whenever a creature within 60 ft. takes damage until the end of the transformation.

Hex Warrior

Workaround to use Charisma modifier for attack and damage with pact weapon.