So, Batman v Superman left me... jaded. Beyond the film’s other failings, there were two points I found rather hard to swallow. They both stem from the same thing, so I'm wondering if they have a comic-based precedent, or if it's just something WB pulled out of their marketing department to shoe-horn as many cameos in as possible.
The first is
during Batman's dream sequence, Batman appears to be leading a resistance against a Superman cult. This really isn't out of tone with the movie, as it frames a possible religion being built around the man. Unfortunately, the para-demon like background goons and the Ω symbol burned into the ground hint at Darkseid being a player in this dream sequence. Last I checked, Bruce Wayne wasn't also Paul Maud'dib. Have there been any comic examples of him having prescient dreams before?
The second is
shortly after this dream sequence, we go to another dream sequence in which the Flash appears before Bruce Wayne in a time-rift-looking thing to give Bruce vital plot-pertinent information. This in and of itself is nothing new, but it ALSO appears in a dream sequence. Again, this points to Bruce Wayne being able to dream of things he has never encountered before, unless the Flash has a new power to invade someone's dreams.