"Markov didn't dissappear. He's imprisoned in his own Manor. Trapped in stone like a statue. He had a fight with another planeswalker, Nahiri she's called, who brought Emrakul to this plane in an attempt to get Sorin to sacrifice himself to save the plane. Much like he did to her and Zendikar. Honestly though I'm glad she imprisoned him. And the Gatewatch managed to imprison Emrakul in the moon. If it wasn't for the Gatewatch, this plane would be destroyed." Arlinn explained what had become of Sorin and Emrakul.
One of the Cathars steps forward, Alwin would recognize her to be Thalia, once the Guardian of the helvault, one of Thraben's greatest cathars. "That's not all. Avacyn has been destroyed. She no longer protects this plane. Sorin's creation went mad so he unmade her before she turned into one of those monsters."