Bow of the Solars

Book of Exalted Deeds
James Wyatt, Christopher Perkins, Darrin Drader

This Large +2 composite longbow (+4 Strength bonus) turns any arrow it fires into a slaying arrow targeting any creature type the wielder chooses.

Strong necromancy; CL 13th; Craft Magic Arms and Armor, finger of death; Price 100,100 gp; Cost to Create 50,500 gp + 3,968 XP.