My thoughts about your thoughts :D
- Remain silent: about the "uncover" part, it's true, everybody can. I was implying that you have the mechanical right to know some secrets from time to time just by hearing and watching people. Perhaps i should remark that part a bit. My idea was: since you are a spy, you are trained to notice even the smallest things, and that get you to know things other couldn't.
- Fight Dirty: only one of the 2 options would be very very weak imho.
- Vanish: It's a leap out of action, yes. I could make the reverse perhaps? When you leap into action, you have the right to emerge from a shadow if no one were watching you first. How does that sound? Mechanically it's better, but narratively it's the opposite: you use it to take people by surprise instead of using as a get out of the jail card.
- Lies: you'll roll badly sooner or later, and then will they believe you anything you already said in the past? You have to mix lies and truths, and spreading false rumors and be believed it's pretty fun imho. Telling lies is different from falsely promising something. Should i change it to "spread false rumors"? My intention isn't that you can get what you want using a promise you won't keep, the intention was "you can insert some rumors or talk behind the back of someone inside a conversation and the person who hears it will believe those lies and act accordingly".