Yu-Gi-Oh! - The Fabled Unicore (HA04-EN027) - Hidden Arsenal 4: Trishulas Triumph - 1st Edition - Secret Rare A single individual card from the Yu-Gi-Oh! trading and collectible card game (TCG/CCG). This is of Secret Rare rarity. From the Hidden Arsenal 4: Trishulas Triumph set. You will receive the 1st Edition version of this card.