Fatigued Casting (Basic)

You have learned the ability to dig deep within yourself and cast additional spells per long rest at the cost of exhaustion points:

• As a bonus action, you can choose expended spell slots to recover. The spell slots can have a combined level that is equal to or less than your constitution modifier. Doing so gains you two points of exhaustion.
• Example: Braxious is a level 5 dwarf wizard with a  Constitution score of 16 (+3), with this feat, Braxious is able to use all of his spells and if decided upon, dig deep within and find the ability to cast up to 3 additional spell slots (in levels) before gaining two levels of exhaustion.   
  • Three 1st level spells, One 2nd and One 1st level spell, or a 3rd level spell
• This feature cannot be used again until after a long rest
• This feat can be taken prior to reaching the requirements of the feat. The ability remains just out of the reach of the character until they unlock all requirements in which it manifests as the need unlocks the ability