Properties
Wondrous item, rare, requires attunement. While looking through the lens, the bearer sees faint golden lines around hidden compartments, altered mechanisms, and magical routes within 30 feet. Once per short rest, the bearer has advantage on one Investigation, Arcana, or tool check involving a device, map, portal, or vehicle. The lens does not reveal creatures.
Lore
Lio cuts each meridian lens from glass exposed to a safe comet reflection. This one records the restored public sky lanes as a web of gold points.
Game Master guidance
The lens indicates that a seam or route has been altered but does not explain its purpose or open it automatically. Solid lead blocks the effect. The item remains useful after the saga without replacing ordinary investigation.
Related use
The item is designed as a memorable reward rather than a requirement for later play. A party without it can solve every related scene with the listed checks, tools, spells, or environmental choices.