A realistic painting featuring a man standing before a glass dome containing a lifelike replica of himself. The scene should depict a dimly lit room, with the man's expression conveying shock, horror, and existential dread as he confronts his own mortality. The glass dome should be ornate and slightly foggy, with the man's lifeless form clearly visible inside. The overall atmosphere should be eerie and unsettling, capturing the surreal nature of the moment.