The LEGO Nexo Knights: Stone Monsters Accessory Set (853677) is a retired LEGO set released in 2017. This complete set includes 23 plastic pieces to build Stone Monsters, part of the NEXO KNIGHTS theme. Designed for ages 6 and up, this accessory set features a unique LEGO character known as the Monster, adding an extra element of fun and creativity to playtime. Perfect for fans of the NEXO KNIGHTS series, this set offers a creative and engaging building experience.