Compass

This is no mere clock, nor compass, nor any other instrument with which you are acquainted. This is no mere key, though it will unlock secrets and lift obscurities.  This is no mere trinket, nor toy nor tool; nor is it meant to be ornamental. It is neither strictly for style or for function. It may tell you when, or where, and it may whisper how, but it will never reveal why. It will never know who. It will guide you when your conscience is weak and fortify you when your courage has dwindled. It will discern true magic from snake oil, and lead you down paths both proper and crooked. It is a gift, a treasure, a miracle, and it can be yours for a mere pittance…