Well?" he asked, in a whisper. "Any suggestions?""Obviously you attack," said (the sword) scornfully."Why didn't I think of that?" said Rincewind. "Could it be because they all have crossbows?""You're a defeatist.""Defeatist? That's because I'm going to be defeated!

Artemis Entreri is a fictional character in the Forgotten Realms  who wields a sword described  as:

"The sword has a slender, razor-edged, gleaming red blade, its length inscribed with designs of cloaked figures and tall scythes, accentuated by a black blood trough running along its center. Entreri opened his hand enough for the wizard to see the skull-bobbed pommel, with a hilt that appeared like whitened vertebrae. Running from it toward the crosspiece, the hilt was carved to resemble a backbone and rib-cage, and the crosspiece itself resembled a pelvic skeleton, with legs spread out wide and bent back toward the head, so that the wielder's hand fit neatly within the 'bony' boundaries. All of the pommel, hilt and crosspiece was white, like bleached bones—perfectly white, except for the eye sockets of the skull pommel, which seemed like black pits at one moment and flared with red fires the next."

What is the name of this powerful sword?