This video, by Flashback FilmMaking @ YouTube, contains all deleted materials that are currently available (as of DEC 2019) from Zack Snyder's Justice League.
Determined to ensure Superman’s ultimate sacrifice was not in vain, Bruce Wayne aligns forces with Diana Prince with plans to recruit a team of metahumans to protect the world from an approaching threat of catastrophic proportions
Based on the Graphic Novel by Alan Moore
Starring: Jackie Earle Haley, Billy Crudup, Patrick Wilson, Jeffrey Dean Morgan, Malin Akerman, and Matthew Goode