Chains of Dominion

You gain the benefits of the Pact of the Chain feature, as if granted by the Eldritch Invocation of the same name.

You can mentally communicate with any creature you have summoned or created, and you can issue commands to it for its next turn without using an action. If such a creature has a different initiative count than your own, you can have it instead act on your turn.

At Level 9: Once per day, when you cast a spell that summons or creates a creature, you can regain the spell slot expended to cast that spell.

At Level 17: When a creature you summoned or created makes an attack roll, it can add your proficiency bonus to its attack roll.