Bound Servitor

Bound Servitor: 

• AC = 14 + PB
• HP = 2 + CHA mod + (5 × warlock level) (the bound servitor has a number of Hit Dice [d8s] equal to your warlock level)

The servitor acts immediately after your turn in combat.

It obeys your commands without requiring an action. If you give no command, it takes the Dodge action.

Death Rend. Melee Weapon Attack: your spell attack modifier to hit, reach 5 ft., one target you can see. Hit: 1d8 + PB magical slashing damage.

Grave Call (3/Day). The grave calls from inside the servitor and restores 2d8 + PB hit points to itself or to one undead, construct, or object within 5 feet of it.

Extra Attack

Starting at 6th level, you can attack twice, rather than once, whenever you take the Attack action on your turn.

Death Scythe

At 9th level, you've learn new ways to channel arcane energy to harm or heal. When either you hit a target with a magic weapon attack or your Bound Servitor hits a target, you can channel magical energy through the strike to create one of the following effects:

• The target takes an extra 2d6 necrotic damage.

• Choose one creature or object you can see within 30 feet of the target. Healing energy flows into the chosen recipient, restoring 2d6 hit points.

You can use this energy a number of times equal to your Charisma modifier (minimum of once), but you can do so no more than once on a turn. You regain all expended uses when you finish a long rest.

Improved Servitor

At 15th level, your Death Scythe and Bound Servitor become more powerful:

• The extra damage and the healing of your Death Scythe both increase to 4d6.

• Your Bound Servitor gains a +2 bonus to Armor Class.

• Whenever your Bound Servitor uses its Deflect Attack, the attacker takes necrotic damage equal to 1d4 + your Charisma modifier.

Deflect Attack. The servitor imposes disadvantage on the attack roll of one creature it can see that is within 5 feet of it, provided the attack roll is against a creature other than the servitor.