More fun: We need to see our heroes working with an UB 'walker as opposed to against them.

Shadows Over Innistrad:

The plague of demons seems unending. The humans begin to wonder if the Church of Avacyn are fulfilling their duties as protectors. Many feel that they aren't harsh enough on the Skirsdag. Others believe that the Church has been infiltrated by agents of the Skirsdag. Some whisper that the Skirsdag hold the key to ending the plague of demons. A few are very vocal in their belief that the Church is using the demonic incursions as a means of fleecing the humans so that the high-ranking members of the Church may enjoy whatever excess and pleasure they desire.

A general feeling of helplessness has seized the humans of Innistrad. Each believes that he or she's right and that the others are wrong. From these strongly held beliefs and fears come waves of mob justice. Lynchings, burnings, public executions of Avacynians, Skirsdag Cultists, even other townspeople believed to be aiding and abetting either of the major religious factions.

Ashiok is drawn to the negative energy that permeates the plane. The Dementist uses the hates, hopes, and fears of the Innistrad folk to fashion new nightmares. However, the strength of the Innistrad folks' prejudices warp the nightmares, turning them against Ashiok.

The Gatewatch arrive and find themselves working with Ashiok to stem the flow of nightmares that permeate Innistrad, assimilating wolfir, werewolf, vampire, demon and devil alike to give rise to nightmare-horrors. Nightmare-horrors whose powers threaten to drive the folk of Innistrad, human and monster alike, into wiping one another out.