“Piercer of Light: A rod made of steel, with the length and width of a regular sword hilt. There is some ribbing on its surface, that we assume is to ensure its grip. Some circumstances cause a beam of light to appear from one end of this rod, with a length from a dagger to a spear, according to the severity of the grip. This light can penetrate all materials against which we have tested, save the shields of our Aegis or the beam produced by another piercer.”
Estefa Macasli, An Investigation about the Artifacts of Haven.