Finkle's Skinner

Finkle's Skinner is a one handed dagger.

Background
This dagger looks like nothing more than an ordinary skinning knife, but it bears a powerful enchantment that makes it ideal for fighting beasts. Originally carried by the gnomish adventurer Finkle Einhorn, it has not been seen since his legendary effort to hunt down a massive canine creature said to be terrorizing a remote section of the Blasted Lands. The dagger's pommel appears wrapped in a well-tanned animal skin that changes to a different type each day. One day it might be a gray wolf hide, while the next it bears the orange and black stripes of a jungle tiger.

Source
This item drops from The Beast in Upper Blackrock Spire.

Trivia
The name Finkle and Einhorn come from Ace Ventura Pet Detective in which the antagonist's real name was Ray Finkle and he used Lois Einhorn as an alias.