Skill Name: Concealment
Requirements: Tricks and Ruses, Theft, Ranging, Stealth 150+, Agi 100+, Dex 50+ (gotta be nimble yo!)
Type: Active
Description: When player uses Concealment and is successful, he will be shown as transparent. This means if player A uses this ability, he will become invisible until detected by two means:
1) Enemy Player has High enough perception to see player, similar to how foraging works. (Re-rolling could work, but if you don't know a player is concealed, you won't be re-rolling)
2) Player walks into a well lit area, AKA Light sources.
Concealment is useless during the day and becomes more effective when the moon phase reaches New Moon. Con sealed players can only move 1 tile at a time, crawl speed, and each time he moves there is a chance he breaks out of concealment. Higher stealth prevents this from happening. But if he walks into light source, he will always be detected. This would make it that villages should always be well lit at night in case of such dangerous thieves lurking in the shadows. Major penalties on players wearing any metal armor of any sort, but it is possible to use metal armor if player's character is well developed enough to outweigh the negative modifiers.
You can aim while concealed, but there will be a counter Skill to being "Aimed" at called "Ranger's Perception"