Yu-Gi-Oh! - Gem-Knight Zirconia (HA07-EN018) - Hidden Arsenal 7: Knight of Stars - Unlimited Edition - Super Rare A single individual card from the Yu-Gi-Oh! trading and collectible card game (TCG/CCG). This is of Super Rare rarity. From the Hidden Arsenal 7: Knight of Stars set. You will receive the Unlimited Edition version of this card.