The "Onyx Storm Hardcover Standard Edition" by Rebecca Yarros is the latest installment in The Empyrean Ser. Published by Entangled Publishing, this novel is intended for an adult audience and is written in English. With a substantial 544 pages, this fantasy epic is packed with romance and adventure, making it sure to captivate readers in the modern era of literature. This hardcover edition is a must-have for fans of fantasy fiction, offering a high-quality format that is perfect for permanent collection.