Text: Your MC must be a Villain. START OF RIVAL’S MOVE Once per Round, Reveal and discard 1 card from your hand: Rest 1 of your Rival’s Crystals and Stockpile 1. (Place the top card of your Main Deck into your Stockpile.)
FAQs/Rulings
Can multiples of the same card use a "Once per Round" effect?
No. “Once per Round” effects can only be used once each Round across all cards that share a name and tag.
Can I use this card's effect if all of my Rival's Crystals are Rested?