"It's weird, right? But I had one when I left that other room, and it opened that one room but not the rest... I guess they all have a card like this?"

This is such a bizarre place they've been left in, and he is going to have words for his a-die. The door opens though, and the room is - nothing like the one he'd left. There's the bray of a donkey though, so -

"Is this the room you were in?"