Luck of Broken Mirrors

You have inexplicable luck that seems to kick in at just the right moment.

• You have 4 luck points. Whenever anyone makes 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 must choose the worst of the d20s for the attack roll, ability check, or saving throw. You can also Forfeit 2 luck points to get an automatic Natural 1.
• You can also spend one luck point when an attack roll is made against 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, the points cancel each other out; no additional dice are rolled.
• You regain your expended luck points when you finish a long rest.