I have a question about the dol guldur quest. When your hero becomes a prisoner, what is the definition of "Used"? I assume you cannot use any application of the character (cannot use their special ability, cannot trigger abilities based off of this character being in play (elrohir and his brother), and cannot play 0 cost cards off of them).
If this is the case, why not just say "remove that hero from play", and then "Return that hero to play"? It makes me think that there is some sort of functionality that i'm missing here… or maybe the designers just wanted to do something different.
Final question, do they keep their 1 resource that they collect during setup?