I do like the idea of the role except for the reason you are giving the Warden alot of power and big red buttons. If Mur does think about doing this we are likely to see some secret tests coming out for some players to see if they can handle the button. The control factor here however is that they can be prosecuted them selves if they don't follow orders of those handing down sentences or abuse this for personal gain. If I had to make a choice for a player I would avoid a warden being part of a common land such as MD, LR, GG, or Necro to reduce bias. Underground, East lands or No Mans land would be a good place to look. Perhaps you could overturn my thoughts on MB since they represent Justice usually (or at least say they do).