You push obstinately through the shimmering and stumble into a tiny room. A very small room. It is completely empty.
How odd...you think.
You look around and tap on a couple of walls, but they sound perfectly solid. You try the floor with the same result.
You shrug and decide that Prophetess's warning was unfounded and that since this room has nothing interesting in it, you'll leave. But when you look back at the shimmering, it is gone. Panicked now, you begin pushing on all the walls, but none give. You shout for help, hoping that someone will hear you, but no one comes.
Suddenly, the room fills with a dense, green mist. It enters your nostrils and clogs your throat, giving you a horrible coughing fit. You fall on your hands and knees, gagging, and it is nearly impossible to breathe. The mist slowly collects together to form a single, howling entity--
It looks at you and laughs, a horrible, dry, grating sound. You kneel there, frozen in fear. And all you can do is kneel there in terror while it rends your flesh from your bones and consumes all of you. There is nothing left to mark that you were once there.