Everything You Need to Know About Cassandra Nova, Deadpool & Wolverine's Surprising X-Villain

Deadpool & Wolverine's new trailer yesterday didn't really give fresh details on what the film's going to be about, beyond the vague threat of multiversal shenanigans and Wade and Logan's team-up. But it did give us our first really good look at one of the several villains the movie is playing with--and one of the most...