Trade Secrets [Foil] is a card from the Onslaught set of Magic: The Gathering, categorized as an Unknown rarity. Valued at approximately $10.61, it appeals to collectors and players alike for its unique mechanics and artwork. The foil version enhances its desirability, often commanding higher prices in the secondary market compared to its non-foil counterpart. This card is a notable addition for those building their collections from this era of gameplay.