Here is another installment of exTRAPaganza, our Thursday over-the-top trap series.
As you step into the room, the grand marble floor changes to wood planks, and the two nearest sofas turn into battered chests.
Every room in this dungeon is full of illusions. As the players walk through, the illusions they come near (within 5′) revert to normal. This causes penalties to Perception, Concentration, visual skill checks, attacks, and even saves or other checks that rely on sight.