Pokemon 2017 The Best of XY Regirock EX Secret Rare holofoil card. It was only available inside random booster packs of the 2017 The Best of XY series that was released in April, 2017. This is one of the Secret Rare cards. The odds of getting it were very very low.
Card #: 175/171
Type: Secret Rare/Holofoil
Condition: Mint condition. Never been played with. No noticeable creases, dents, scratches or whitening on edges of card.