The Complete Gem-Knight Deck is a full 40-card main deck plus 15 card extra deck mostly from the Battles Of Legend: Monster Mayhem set, featuring a Gem-Knight archetype. Manufactured in 2025 by Konami, these English-language cards are made of durable card stock with a foil finish. This 1st Edition deck includes 40 cards from the Gem-Knight archetype, along with an extra 15 cards from the 2025 release, making it a valuable addition for Yu-Gi-Oh! TCG players ages 6 and up.

Card conditions can vary but most cards have never been played.