I came across some rules topics today when I saw talk about Manning the city walls and melee. The situation was that the player who revealed manning the city walls was chosen so that his new army would be killed to one of the players Valar.
Now I started to think about this issue. Is the player allowed to not put an army character into play even if he has one? By the current rulings it would be considered a form of cheating/unsportsmanship play much like the at the gates and not finding a maester when I have one in the deck. Why I find this situation very strange is that it is dealing with information that my opponent has no knowledge of so the situation needs a judge to validate my hand/deck to make sure I am not cheating. This can create an awkward situation if you truly don't have an army, but still have to call a judge to make sure you are not cheating. In other card games hidden information is well hidden and things like this are well within the rules as your opponent has no way to know and well the game has no way to know either.
Then a continuation thought about dealing with hidden information. Lets say I have Val in play and there is also a seal of the crown, I activate Val and now draw a card that has a same title that a card in my hand already has. Now my hand has 2 cards with same title that aren't identical thanks to Val's effect? Ok then I discard one of those cards to the seal of the crown because I didn't want to play it as my next action, but… I still have one card in my hand with the same title that Val picked and there isn't any distinction between the two cards, am I forced to play the second card as a Val action? would I need a judge to verify that I indeed had two of those in my hand? or should I specify that I threw the Val one away?
For me it just seems strange to have these kind of hidden information rules where you are forced to do things, but there is no way for your opponent to verify that your play is indeed legal by the game rules.
Should there be a more clear ruling of this since we are getting more cards where hidden information can matter in gameplay?