You spot some unusual stonework in an alley in the back of the market square. Curious, you press on a loose tile... And the whole wall starts to shift, revealing stone steps descending to a hidden cellar.



There is a lone figure in the cellar. You recognize it as a Chestkin, sitting happily in front of some poorly scrawled graffiti reading "OPPEN".

                           

The chestkin eyes you with glee. You are evidentially its first customer today—running a hidden shop must not bring in a lot of foot traffic. The creature cannot speak, but you are able to discern its intention nonetheless:

                  (Would you like to buy a rare item?)