Otherworldy Luck

While you were already lucky; you seemed to have mastered, or been given access to, a greater control of your own destiny. Your luck now rarely fails you, and fate surely writes her story in your favor.

• You have 4 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 can choose to spend one of your luck points after you roll the die, but before the outcome is determined. You choose which of the d20s is used for the attack roll, ability check, or saving throw.
• You can also spend one luck point when an attack roll is made against you or a creature makes a saving throw within 30ft. of you. Roll a d20, and then choose whether the attack uses the attacker's roll or yours. If more than one creature spends a luck point to influence the outcome of a roll, your roll is the only one considered. 
• You regain your expended luck points when you finish a short rest.