This golden ring is embedded with two tiny red diamonds.  When you make an ability  check or saving throw you may spend a charge from this ring to gain advantage on that roll. You roll a second d20 and then you can choose which roll to use. You may choose to roll the second d20 after the first die is rolled, but before the results are known. When you use a charge, a red diamond turns clear.

If you use a charge for an ability check in a gambling match and you win that match, you regain both charges.

If both charges are spend, the ring loses all magic and is now a normal golden ring with two small clear diamonds.

Notes: Humanoid