The Bow of Unbreaking Loyalty
This +2 holy composite longbow seems to be made from strangely flexible adamantine, although testing would reveal that its hardness is more than on par with the material it seems to be (hardness 40, hp 150). In addition to its magically reinforced hardness this bow always functions as a mighty composite bow at the wielder's Strength bonus. Finally if the wielder has the ability to Smite Evil they may use it with a ranged attack through the bow and any Evil aligned creature struck must make a Fortitude save (DC 17) or die, this is a death effect unless used against Undead and functions normally against undead.
Oh yes, do I have to say who this is, or is it obvious enough?