rfid protection card sleeve Amazon.com: valonic set of 6 RFID blocking sleeves - insertion from the top, Credit Card Protector sleeve for wallet
Description
If the Pokmon this card is attached to is Knocked Out by damage from an attack from your opponent's Pokmon, that player takes 1 fewer Prize card

Lets explore the concept and some examples
Photo is just examples

2017 Pokemon Shining Legends Ultra Rare Mewtwo Gx #39 SGC 9 MINT available now at Fanatics Collect

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Shipping Estimate
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Ships within 48 hours · Estimated delivery Oct 14 - Oct 19