Watch the final trailer for X-Men: Dark Phoenix

20th Century Fox has released the final trailer for the upcoming (and likely final) installment of its X-Men franchise, Dark Phoenix, showing off Jean Grey’s struggles to contain the vast powers she acquires after an accident in space.The film is adapting the classic Dark Phoenix storyline, first published in the 1980s, in which mutant Jean Grey is struck by a solar flare and transformed, returning to earth as the Phoenix, a being of pure thought. We’ve seen a couple of trailers for