Brandon Sanderson revealed the book that was the most nightmarish experience he had writing, and no, it's not Mistborn. No, it’s not Mistborn, but the final book in Robert Jordan’s Wheel of Time saga: A Memory of Light. Sanderson bluntly put it (via Merphy Napier on YouTube):This was a nightmare. Sanderson explained in the Merphy Napier video:All the cooks who hadn’t been in my kitchen for two books showed up. Readers worldwide received the book with open arms and praised Brandon Sanderson for bringing the book to an epic conclusion.