The Water Margin
A seven-foot-long spear of unknown wood with a foot-long obsidian blade affixed to the top.
The Stygian lance is a formidable weapon, fashioned like a spear with a broad guard at the end and a sharpened obsidian blade. It could be used by a skilled crodlu rider, or wielded on foot with both hands.
Although the lance is clearly endowed with psionic enhancements that improve its combat effectiveness, it is far more fearsome because it also rumored to give its wielder some measure of control over undead.