Prerequisite: The ability to cast at least one spell
You have spent so much time studying the Weave or the Divine channels from which your magic originates that you have developed the ability to exert your body to go beyond its normal limits of spellcasting.
On a short rest, you can choose to spend hit dice (not to be used for healing) in order to regain expended spell slots to recover. The spell slots can have a combined level that is equal to the number of hit dice which you chose to spend, and none of the slots can be 6th level or higher. Once used, you must complete a short rest before you can use this feature again.