The HeroScape Master Set Rise of the Valkyries Walmart Exclusive Onyx Vipers NIB ‘04 is a collectible miniatures game manufactured by Hasbro in 2004. This set includes painted miniatures depicting dragons from the HeroScape universe. Designed for ages 8 years and up, this set appeals to a wide age range of players, including teenagers and adults. Made in China, this exclusive release offers fans of the game the opportunity to expand their collection with unique and detailed pieces.