Level 12 pact of the chain
If your familiar has not moved since your last turn, you may sacrifice its reaction until your next turn to recieve an actin surge. This let's you take a 2nd action on your turn. You may use this only once per turn.
This works on a charge based system. You may hold your proficiency modifier amount of charges. You may regain a charge on a short rest, long rest, or from channeling your gift of the patron to recieve spell slots back.