Fu: 2, Shot: 3, Maximum picks: Any
You have long lived in harmony with your home terrain, and learned it's ways. Your skin is colored to fit the environment.
If you take up a position in your preferred lands while out of sight and stand still, you are undetectable until somebody comes closer than his Perception in meters. Anybody who makes an active search adds the +3 for Active Defense, and gets to make a roll. Count the result as his Perception for spotting you.
This ability does not work if you wear armor or other extensive clothes or very much other gear. However, taking it twice overcomes this limitation.
Elves can take this for any terrain they have a close link with, but need to pick it once for each terrain type. Typical choices are caves, desert, forest, plains, jungle and so on. More exotic choices are woodwork, brick tiles or underwater.
Grimlocks can take it only once and use it in caves and mountains - which includes built-up areas of gravel and concrete.
Sathoni use it to disappear among plants and overgrowth.
Snotlings use this to disappear in dark caves and among trash, junk, and leftovers.