Wondrous Item, artifact (requires attunement)
The Golden Fleece has 2 luck points. Whenever you make an attack roll, an ability check, or a saving throw while wearing the magic item, 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. 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.
The Golden Fleece regains expended luck points when you finish a short or long rest.