You begin to descend the staircase, first Dimitri, then Andy, then Kordian, then Akam, then Beep. You descend deeper, and deeper, and deeper . . .
Soon, the entrance above is merely a blob. The blob turns into a dot; The dot into a speck. Soon the light is lost to view. The torches cast the only illumination (Visibility is now 4 squares, aka 12 feet, in a radius from the square in which each torch-holder stands). You'd think there'd be dust, cobwebs, and rat feces, but there is no grime, nor dust, nor dead spiders, nor webs. And still you keep descending. Eventually, the stairs level out, and you find yourselves in a small room. In the opposite wall is a door banded with iron. There is no handle. In the middle of the room is a low wooden bench, with two keys on it. On the wall is an inscription graven into the stone with Draconian runes. Beep moves forward and translates them. They read thus:
If thou wishest to enter my domain, first a key thou must choose. Random is the choice, for no clues nor distinguishing marks reside on either. Both keys are identical, however one is cursed with a deadly spell, and will not fit the lock. The other opens the lock.
Beside the plaque is a round hole for the key.