The first thing you notice is that you don't really notice anything. We're in the pits of Athenodoros' weird mind, and you never quite know what's going to come up in here. In fact, you could just about get anything as the mists around you all clear, to reveal that you seem to be in Iron Cage, the pit at the bottom of Iron Dungeon. You can see Registeel lying dormant in the corner, but as he snores quietly you notice that the whole room seem to be going in slow motion, leaving those weird trails you see when people move in slow motion in bad movies, and it looks like it isn't quite distributed equally around the room. Furthermore, every now and then a fully armed hoplite spawns in the room and prods someone/something, causing him to lose his focus, starting with Glacier Knight. Lastly, Gravity seems to be inverted. Make of that what you will.