The Iron Ball of Liberation

A user has suggested improving this page or section as follows:

""When invoked, it allows its user to phase through walls" - how long you can use this ability? Is there a warning about timeout?"

0   The Iron Ball of Liberation
Base item	heavy iron ball
Affiliation	neutral Convict intelligent
When carried	warning stealth automatic searching magic resistance
When used	(none)
When invoked	phasing
Base price	5000 zm
Weight	480

The Iron Ball of Liberation is the convict quest artifact in the convict patch and UnNetHack. It is the prize for completing the Convict quest. It is neutral for wishing purposes. Its base item type is a heavy iron ball. It is the heaviest quest artifact by far, at 480.

When carried, the Ball confers warning, stealth, magic resistance, and automatic searching. When invoked, it allows its user to phase through walls, but at the cost of chaining itself to the user.