Zorn has to play around with the key a bit to make something happen. It seems to be the right key as it fits and it turns. After making three complete turns clockwise in succession, there is a metallic 'click' sound. With a startling rush the floor in the little rockets upward crushing everything in the room flat against the ceiling with a cacophony of grinding stone, flattened metal and shattered wood. Fortunately, everyone was staying back from the unpleasant key. It is likely that none of you could have survived the sudden crushing blow between floor and ceiling. Now a mithril door with a simple pull ring in the center stands before you just a few feet in front of where the keyhole in the floor was. The silence, tomb-like, in the aftermath of the sudden rush of noise is broken only by the sound of your own breathing.