Impslayer

From LSWiki

A thin, sharp longsword of adamantite.  Curvilinear runes run all along
its length.  The quality of its craftsmanship is excellent.  You recognize
this as Impslayer.  The runes it bears promise doom and death for those of the
impish race.  You appraise it at sixty-five gold.  
    It is in perfect condition.  
    It looks about a quarter of a dimin wide and thirteen and a half dimins
long.  It weighs about one and a fifth dekans.