Emrakul- Controls an entire grove

They were in a grove in the Ulvenwald, but the Ulvenwald was not the woods they had known. Everything had become twisted and horrifying: the trees now had arms with long slender fingers that reached out to pull at Hal's hair, the brambles had mouths that blabbered and shrieked, the mosses had legs that carried them around like scampering rats, and now even the townsfolk, who did not belong here in the woods, had given in to the coercive force and become things that were far worse than the worst monsters Hal had ever known.

(Emrakul Rises)