Properties
Wondrous item, uncommon. The compass always indicates true east and glows when sunlight, moonlight, or starlight within 60 feet is an illusion. Once per dawn as an action, its bearer draws a 30-foot line of warm light on a surface for ten minutes. Allies moving along the line ignore difficult terrain caused by rubble, glare, or loose glass.
Lore
Mira set the last stable fragment in a brass sighting ring. Its seven tiny colors merge into clear light when the bearer faces an honest horizon.
Game Master guidance
The compass detects that celestial light is false but does not reveal the source or dispel it. Its safe line does not cross empty space, pass through barriers, or protect against attacks.
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.