Runewriter

An implement used for creating/writing Runes.
Referred to in: Legend 3: Vendor: "Then drawing a Runewriter as if from mid-air he wrote upon the three" 
Also in Legend 4 - The Stone Ring: The figure nodded its head and took out a jeweled pen that glowed with blue magic, the kind that story tellers call Runewriters, and on the ring a rune it made that flared at first and then disappeared, along with the figure and the stone offered by the boy.