Text: START OF RIVAL'S MOVE Select 1 Battlefield in play: Discard it. When your next Move starts this Round, you can Stockpile 1. (Place the top card of your Main Deck into your Stockpile.)
FAQs/Rulings
Can I discard my own Battlefield with this effect?
Yes, you can.
If I don't discard a Battlefield with this card's effect, can I still Stockpile?
Yes, as long as the card’s effect wasn’t nullified.
When my next Move starts, if I already have cards in my Stockpile, when do I Stockpile the card for this effect?
When your Move starts, adding cards from your Stockpile is a mandatory action that always happens first. After you take from your Stockpile, you can resolve this card’s effect and add to your Stockpile.
When I Stockpile a card at the start of my Move, can I immediately add it to my hand?
No, you will have to wait until the start of your next Move or when your Rival takes from their Stockpile.