“Being unseen isn’t the hard part. The hard part is staying that way once the fight starts.”
You’ve put shadow, distance, or solid cover between yourself and those who want you dead. While it holds, you can’t be directly targeted — but the moment you act or expose yourself, the advantage is gone.
Effect: To become Hidden, succeed on a Sneak (Agility) Trial against the target’s Mind DR. While Hidden, enemies cannot directly target you unless they have Detected you. A creature may attempt to find you with an Awareness (Intellect) Trial against your Ward DR — on success you are Detected by that creature. While Hidden, apply the highest applicable Cover or Obscured tier bonus to your Guard and Ward DRs. Bonuses of the same type do not stack.
Removal: Ends if you attack, are Detected, or move out of concealment.