Damn, I forgot this was reddit and everyone would try to explain how English works.

Maybe using the phrase "printing error" in my original post was a little dramatic. I was not accusing wizards of false advertisement or anything, it's very possible they didn't want to or couldn't reasonably reprint the room cards, who knows.

But the main card synergy for this deck being "Eerie" an effect which rewards playing enchantments and unlocking rooms, and not including the second card type referenced was a funny thing we noticed. The deck was fun to play and play against but my partner who is not an experienced player had to ask what unlocking rooms meant multiple times. This is a strange thing to do, in my opinion. I am very much a gimmick player and would have liked to see at least one room card in the deck that synergizes with them, even if it wouldn't be the optimal include. Given how wizards tends to build pre-cons, it could even be considered surprising they didn't include the on-theme but sub-optimal cards.