{"product_id":"card-cml7w5mno94dp1169b36n2x6q","title":"Gem-Knight Hollowcore (BLMM-EN022) [Battles of Legend: Monster Mayhem]","description":"\u003ctable class=\"singles-description-table\" xmlns=\"http:\/\/www.w3.org\/1999\/html\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSet:\u003c\/td\u003e\n\u003ctd\u003eBattles of Legend: Monster Mayhem\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType:\u003c\/td\u003e\n\u003ctd\u003eEffect Monster\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRarity:\u003c\/td\u003e\n\u003ctd\u003eSecret Rare\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber:\u003c\/td\u003e\n\u003ctd\u003eBLMM-EN022\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cdiv class=\"single-description-div\"\u003e\n\u003cdiv class=\"oracle-text\"\u003eYou can send 1 \"Gem-Knight\" Normal Monster or 1 \"Gem-Knight Fusion\" from your Deck to the GY; Special Summon this card from your hand in Defense Position. When your opponent activates a card or effect, while you control a \"Gem-Knight\" Fusion Monster (Quick Effect): You can banish 3 \"Gem-Knight\" cards from your GY, including this card; negate that effect, then all \"Gem-Knight\" monsters you currently control gain 1000 ATK. You can only use each effect of \"Gem-Knight Hollowcore\" once per turn.\u003c\/div\u003e\n\u003ctable class=\"singles-reverse-description-table\"\u003e\u003ctbody\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tcgAtlasMetaData\" style=\"visibility:hidden;height:0;overflow:hidden;position:absolute;left:-9999px\" data-matchingid=\"NA-2-24263-635907\" data-cardtype=\"yugioh\" data-lastupdated=\"2026-06-28T12:37:14.494Z\" data-identityid=\"cml7w5mno94dp1169b36n2x6q\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"catalogMetaData\" style=\"visibility: hidden;\" data-cardtype=\"yugioh\" data-cardid=\"635907\" data-tcgid=\"635907\" data-lastupdated=\"2026-06-28T12:37:14.494Z\"\u003e\u003c\/div\u003e","brand":"Konami","offers":[{"title":"Near Mint 1st Edition","offer_id":47798392946873,"sku":"BLMM-BLMMEN022-EN-NF-1","price":0.43,"currency_code":"CAD","in_stock":false},{"title":"Lightly Played 1st Edition","offer_id":47798392979641,"sku":"BLMM-BLMMEN022-EN-NF-2","price":0.37,"currency_code":"CAD","in_stock":false},{"title":"Moderately Played 1st Edition","offer_id":47798393012409,"sku":"BLMM-BLMMEN022-EN-NF-3","price":0.3,"currency_code":"CAD","in_stock":false},{"title":"Heavily Played 1st Edition","offer_id":47798393045177,"sku":"BLMM-BLMMEN022-EN-NF-4","price":0.22,"currency_code":"CAD","in_stock":false},{"title":"Damaged 1st Edition","offer_id":47798393077945,"sku":"BLMM-BLMMEN022-EN-NF-5","price":0.13,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/2471\/9289\/files\/635907.jpg?v=1782650237","url":"https:\/\/fafnirshoard.ca\/products\/card-cml7w5mno94dp1169b36n2x6q","provider":"Fafnir's Hoard","version":"1.0","type":"link"}