The Dead Lands of Athas
Tokoloshe was a halfling bard infamous for his particularly bloody assassinations. This was his knife. The tiny obsidian razor has tiny occlusions which give the stone a golden sheen, and holds an edge of incredible sharpness. The blade only deals 1d2 points of damage, but deals an additional point of wounding when inflicting max base damage. Each point of wounding acquired in this way is cumulative, and cannot be stopped until a successful Heal DC 15 is applied.