Bow of Arvoreen

Bow of Arvoreen is an enchanted short bow +2 which has a bonus to thaco and can only be used by halflings.

In-game description
"Bow of Arvoreen: This enchanted bow has been in Mazzy Fentan's possession for several years, given to her by her god Arvoreen.  It is usable only by halflings, granting a +2 bonus to hit rolls."