Psionic Power

you have a number of dice equal to twice your proficiency bonus, and they fuel various psionic powers you have. Some of your powers
expend the Psionic Energy die they use, as specified in a power's description, and you can't use a power if it requires you to use a die
when your dice are all expended. You regain all your expended Psionic Energy dice when you finish a long rest. In addition,
as a bonus action, you can regain one expended Psionic Energy die, but you can't do so again until you finish