The Contractor

As a warlock you are automatically the kind of being to take a risk on what you see as a good deal.  But are you willing to take it further?  From Yugaloths, To Lords of Hell, to Archfey.  All of them are hungry for things.  Souls, money, power.  They have found that deals are good ways to get that power, and now they are looking to put you to work to make those deals yourself.  You are provided with the power necessary to make deals on your patron's behalf.  You are no longer the grunt on the front line, you are middle management.  You are HR.  You can bind a small part of the souls of others, get them to make a deal.  in return they receive temporary access to your money, or your supplies, or possibly even a twist of fate itself.  The bard may give away this twist, but you are a bit more cunning.  You know nothing worth having comes free.  What price will you extract for your aid?  And in reward, fate twists for you too.  not the same way, but twisting all the same. 

How much power can you build up?  Will you buy souls for your master, or just pieces at a time?

Silver Tongue

Gain Proficiency in Persuasion

Let's Make a Deal

You gain the ability to form a Bargain with another creature.  A bargain will last until You begin a long rest, the creature you bargained with begins a long rest, or they use up whatever resource you gave them as a part of your bargain, whichever of these terms happens first.  Bargains must be entered willingly.  The Creature you are making a deal with MUST be able to understand what it would be agreeing to and must do so of its own free will.  You cannot bargain with a creature under the effects of the charmed condition.  You may Bargain for any commodity you desire, material goods included.  Bargains cannot be negotiated in combat; however you can prearrange bargains, and finalize them in combat as a free action.  Even if a Bargain does not include rolling on the Bargain Die, it still uses one, making it unavailable until the bargain ends.

You gain a resource for bargaining known as Bargain Dice.  You have a number of d6 equal to your Charisma Modifier (minimum 1).  You may trade these dice to other creatures in exchange for an agreed upon resource (such as gold or an item) or one of their proficiencies.  At later levels you will gain the ability to bargain for other things.  The creature may use the Bargain dice to be added to any one roll of any skill check, saving throw, attack roll, or damage roll (in the case of being added to a damage roll, the extra damage is force damage).  Bargain Die are a one-use commodity and when used, end the bargain.  Your bargain die will grow at level 4 to d8, at level 10 to d10, and at level 14to d12’s.  You cannot make a deal with yourself, thus you cannot use your own bargain dice.

The Fine Print

when you give out your bargain dice, you gain advantage on one roll per round, per bargain dice in the possession of another creature.

Trade of Substance

Trade of Substance: Your ability to bargain has grown beyond simply proficiencies.  You can now make trades of substance.  You can trade Hit points, raising and lowering maximum hit points accordingly, racial abilities, and your own Eldritch invocations

Arcane Pacts

You can now trade magic.  You can give another character one use of one of your spells as if it were cast with one of your warlock spell slots (this does not cost you a spell slot) but you lose access to that spell until they use the spell.  While this needs no roll of the Bargain dice, this does use one and you will receive the benefits of The Fine Print.  You can also negotiate to receive a spell caster’s spell slots.  They will specify the spell slot level you are taking, and lose that spell slot.  You will have it until you use it or the bargain ends.

All Sales Binding!

Starting at 14th level, Every time a Bargain die is returned to you, you may choose to make a charisma saving throw: (DC 25)if you successfully save, you may keep whatever benefit was rented to you For a number of days equal to your charisma modifier.  The person you bargained with does not regain it until you lose it, but you still regain your bargain die.