To activate the construct it must be fed precious metals, silver, gold or platinum, of at least Fair value. It consumes these materials using its tiny crystalline jaws, reducing the entire mass to nothing within a few minutes. Once fed it will be active for one hour. While active it's owner can place it upon any sealed or locked object (doors, chests, magically sealed scroll cases, etc.) and the Arachno-key will begin to open the closure, its tiny legs spreading into thousands of hair-fine manipulators, capable of opening the most complex locks, feel out the secrets of any trap, or uncovering the tricks of any magical seal.
Each minute the Arachno-key works it can do one of the following:
- Make a Legendary test of lock-picking.
- Make an Epic test of trap removal.
- Make a Superb attempt to remove a magical seal or locking mechanism.