The Platinum Yendorian Express Card

(   The Platinum Yendorian Express Card
Base item	credit card
Affiliation	neutral Tourist intelligent
When carried	telepathy magic resistance half spell damage
When applied	(none)
When invoked	charging
Base price	7000 zm
Weight	1

The Platinum Yendorian Express Card is the tourist quest artifact. It is neutral for wishing purposes. Its base item type is a credit card.

When carried, the Card confers magic resistance, telepathy and half spell damage. Invoking the Card charges objects just like the scroll of charging. However, only tourists can perform blessed charging.

This artifact is a reference to the Commodore 64 version of the game Wizardry, whose manual states that players start with limited gold because "few adventurers have a Platinum Yendorian Express Card."

Encyclopedia entry

This is an ancient artifact made of an unknown material.  It
is rectangular in shape, very thin, and inscribed with
unreadable ancient runes.  When carried, it grants the one
who carries it ESP, and reduces all spell induced damage done to
the carrier by half.  It also protects from magic missile
attacks.  Finally, its power is such that when invoked, it
can charge other objects.