"Only a lens. The rest is work. A lens doesn't tell you whether to use it for surveillance or scholarship." He pulled an object from between his fingers that was neither glass nor stone: a disc, thin as a coin, embossed with a pattern that seemed to rearrange like a star map. When he placed it on his palm it unfurled into a ribbon of light that fed into Stephen's wrist sigil with a gentle, invasive curiosity.
