Yu-Gi-Oh!
Gem-Knight Hollowcore
Battles of Legend: Monster Mayhem · 022 · Secret Rare
Current UK price · near mint
£0.28▲ 27.3%
As of 2026-05-23 · folio price index · last 7 days
About this card
Gem-Knight Hollowcore is a Secret Rare from Battles of Legend: Monster Mayhem, part of the Yu-Gi-Oh! trading card game. Track its price, watch its history, and manage your full TCG collection — across 13 games and counting — with folio. Built by collectors, for collectors.