The one in Suicide Squad where Amanda Waller and batman were flipping through JL files

Deathstroke's cameo. I just hope that it's not the last we see of him.

I just wish they used Luthors theme from BvS for it.

I pick the Mr. Mind one because it was the first PC in a long time I didn't really understand and I had to research about the character after the movie. Really excited to see what the do with him and the monsters society/7realms as it opens so many doors in the dceu.

Lex meeting Deathstroke was the best, then Bruce looking at JL Case Files comes in second.

Maybe literally, assuming the doors in the Rock of Eternity are the gates to those realms

Deathstroke.