# The Mantle of Knowledge

[   The Mantle of Knowledge   

Base item

helm of brilliance

Affiliation

neutralMonkintelligent

When carried

magic resistanceESP

When worn

intelligence bonuswisdom bonusdoesn't hinderspellcasting

When invoked

energy boost

Base price

zm

Weight

40

The Mantle of Knowledge was the Monk quest artifact in NetHack Plus and SLASH 6.  Its base item was a helm of brilliance.
In addition to increasing the wearer's wisdom and intelligence, as a helm of brilliance, the Mantle granted magic resistance and extrinsic ESP while carried.  When invoked, the Mantle gave an energy boost equivalent to the Mitre of Holiness.

Legacy
When the Monk role was first included in vanilla, in NetHack 3.3.0, the quest artifact was the arguably more desirable Eyes of the Overworld, which grant a new property: astral vision. The earliest versions of SLASH'EM adapted the 3.3.0 code, so the Mantle was supplanted by the Eyes in the SLASH lineage as well.
At present, the Mantle's only appearance in an active variant is in SlashTHEM, where it is the quest artifact for the deferred Psion role. In an improvement on the original, the Mantle now grants half physical damage while worn.  ESP is now a benefit of wearing the Mantle, and magic resistance a benefit of carrying it. When invoked it provides an energy boost.

References
SLASH 6 include/artilist.h#line 340
SLASH 6 src/artifact.c#line 1170
See also
SlashTHEM artifacts