The Loaner

When you were a apprentice wizard, you always wondered why spellcasters could use spells only a limited amount of times. So you studied the forces that make up the power of spellcasting, and tuned it for you own benefit. This allows you to give more spell slots to party spellcasters, but if your party members go on without paying back your favor, they will not go unpunished.

Energy Loan

You can give spell slots to party members

As a bonus action, you can concentrate energy from yourself, and give it to a willing party member besides you. There is no maximum on how many spell slots you can give, only requiring you to have the slot in the first place.

The party member who received the spell slot can use a bonus action to use one spell slot of the same type received and give it to you. If they can not or do not do this within the next two long rests, then they will receive one level of exhaustion for each short or long rest after the deadline. 

Create Something Out of Nothing

This is pretty much giving a middle finger to the first law of thermodynamics 

The PC you give your spells slots to when using Energy Loan gets double the amount, while still requiring the initial amount from you or the receiver.

Once you use this feature, you cant do so again until you finish a long rest.

Energy Leech

"UNLIMITED POWERRRRRR!!!"

-Chancellor Palpatine

As a bonus action, you can steal one 3rd level or below spell slot from a enemy (that has spell slots) within 30 feet and you can see, and give it to yourself.

A enemy can only be leeched from once.

 

Master of Loaning

This bachelor's in business wasn't for nothing.

You have a lot of experience of loaning your energy, and with energy conversion. This allows you to change the way you handle your loans or spell slots. Choose one of the following:

Loan Shark: You can double the required spell slot payment of your party members you used Energy Loan with, plus instead of the PC gaining a level of exhaustion when the payment is overdue, they have to pay you a amount of currency determined by you (as long as the PC can pay it).

The Forgiving: You can remove the level of exhaustion penalty if a PC has a overdue payment, and the PC has advantage on their next attack when you do this.

Help Goes Both Ways: Your party members can loan you their spell slots (they can chose to require you to pay it back), and you gain a extra use of the Create Something Out of Nothing feature.