The Dreaming Vol. 3: One Magical Movement — Simon Spurrier

As the second year of the Sandman Universe begins, the sentient algorithm known as Wan is now the acknowledged lord of Dream's realm, and unquestioned ruler of all his subjects. It's a huge problem that Wan is completely insane, and more than capable of wiping out all life in the Dreaming. What can Abel, the only one who knows Wan's secret, do about it? And what must he do to poor Matthew the Raven to put his plan into action? Collects The Dreaming #13-20.