The Severing Knife

"It's important that every witch equip themselves with a Severing Knife," Amahle said in a tone that was much sharper than what she'd use to describe cauldrons and wands. 

At her waist, Amahle wore a bone-handled knife that Ashlynn and Heila had assumed was a simple utility knife. After all, despite her vaunted status, within the Briar Amahle presented herself as a very mundane and ordinary woman who just happened to have a few extraordinary abilities. 

Now, however, when the older witch pulled the bone-hilted knife from its sheath, the entire room dimmed as if the light itself had been frightened away by the fearsome blade. The blade itself was also made of bone, as though the entire knife had been carved from a single piece of a large beast's arm or leg. Along the blade, sharp, angular Eldritch Glyphs emitted a lurid red glow that filled both Ashlynn and Heila with an ominous sense of dread.