The fan trailer cuts together footage from Justice League with several of the X-Men movies – mostly X-Men: Days of Future Past.
But whether the X-Men can hold their own against the Justice League is another story.
Justice League is now in theaters, properly introducing The Flash, Aquaman, and Cyborg properly to the DCEU after their brief cameos in Batman v Superman (with a second appearance by The Flash in Suicide Squad).
One that YouTuber stryder HD asks with a pretty spectacular fan trailer showing the X-Men going into battle against The Justice League – in what would probably make a pretty exciting and explosive movie.