First time building an item, the idea just struck me inspired by a HUD element from Thief: The Dark Project, in the spirit of #ThiefWeek. Feedback highly desired!
Ring of Shadows
A thin ring of smooth iron clasping a shard of onyx. If you look at the onyx closely enough, its blackness seems to shift just below the surface.
When you evade or avoid a watchful eye, take +1.