Clockworks are constructs of steel and bronze that perform complex routines. Clockworks are neither living nor magical, but their clever engineering can make them appear to be both.
Nonmagical Guards. In a world where magic prevails, mundane engineering is rarely appreciated. But clockwork constructs have one advantage that sets them apart from magical inventions—their very lack of magic. Dungeon architects pay princely sums for complex nonmagical sentries, knowing all too well that thieves have many tools to detect and bypass magic.
Authorization Required. Clockworks perceive the world using delicate sensors capable of picking up the slightest vibrations. They sense shape but not color, and are not fooled by visual illusions. Nevertheless, they are able to identify individual creatures by their shape, size, and behavior. They can be programmed to allow authorized creatures to enter an area, while attacking or monitoring intruders.
Creations of Routine. Clockworks follow instructions built into them by their creators. While these instructions can be very complex, clockworks don’t think and don’t learn. If you trick a clockwork once, you can do so again the next time you meet it.
Clockwork Nature. A clockwork doesn’t require air, nourishment, or rest, and is immune to.
Immutable Form. The clockwork is immune to any effect that would alter its form.