Hyouin Luck Feat

Fortune seems to favor you—or perhaps you have found a way to manipulate probability itself. This feat allows you to twist fate in your favor at critical moments. Your perception of causality and chance gives you an uncanny ability to change outcomes, reflecting your genius-level intuition or conspiracy-driven paranoia.

• You have 3 luck points. Whenever you make an attack roll, an ability check, or a saving throw, you can spend one luck point to roll an additional d20.
• You choose which of the d20s is used for the roll (either your original roll or the lucky reroll).
• You can also spend one luck point when an attack roll is made against you. Roll a d20, and choose whether the attacker uses their original roll or your lucky reroll.
• You regain all expended luck points when you finish a long rest.