Passive Mapping

Rank	Effect	Flavor
1	Reveal random tiles outside LOS	You passively map a small area around you.
2	Reveal more random tiles outside LOS	You passively map the area around you.
3	Reveal many random tiles outside LOS	You passively map a large area around you.
Species notes: Deep Dwarves start at rank 1 (2 at XL9, 3 at XL18).
Good mutation