An older woman with steel gray hair, wearing a tiara and a stylish red dress-suit combo, sits at the front of the Lorcana line at Gen Con 2023, explaining to a group of four younger men what happened that morning. She has a diagram. This is Esther Emerald. That’s not her real name; that’s her character’s name for a LARP she did years ago. It’s 6:30 p.m. The line she’s in began to queue at six.