The REAL Best Pictures by BringMoreLegos

Question 12

The final best movie of 2017 was only two-and-a-half minutes long, but it brought so much joy to so many. This transcendent piece of art was in fact a mistakenly uploaded trailer that had been cut without the proper sound mix, playing only a few postproduction effects and screams over eerie silence for the first minute. What feature film did this trailer advertise? (And yeah, it was another one of those years-later sequels.)