The Iron Flame & Onyx Storm - Wing and Claw Collection by Rebecca Yarros is a 2-book series from The Empyrean Ser. Published by Entangled Publishing, LLC in 2025, this hardcover set includes the fantasy novels Iron Flame and Onyx Storm. With a gripping storyline blend of fantasy and romance, this collection is sure to captivate readers with its epic saga and engaging characters. The English-language series is a must-have for fans of the genre looking for a thrilling adventure.