Makar
Member
It wasn't in any trailer, it was 20 seconds of leaked phone camera footage from the exclusive Hall H screening at San Diego Comic Con, posted on Twitter and taken down not too long later. It's much better in the actual show, but I can't find any proper clips of it from the show online.
Oh, i just heard about it on The Prancing Pony Podcast, so i guessed it was an early showing of a trailer. They do EXPLICITY say that it was Morgoths shadow, but they may have gotten it wrong.
Anyways, thanks for clearing this up