Yes, GendoIkari, but theoretical rules questions are the most fun!
Accountability was why I asked it in the first place.
You know which card in your hand is what, but your opponent doesn't (barring Menagerie, etc...).
Revealing Watchtower is done after the card has been gained, that was said by Donald in the thread on BGG that was mentioned. So the card is in your hand, you reveal WT, put a mystery card on top of your deck, there's nothing stopping you. In practice, it should only be one card and you can just show it to your opponent if he asks.
All the rules say is this:
If a gained card is going
somewhere other than to your discard pile, such as a card gained with
Mine (from Dominion), you can still use Watchtower to trash it or put
it on your deck.
So no help there. My point derives from this:
- Your draw pile is an ordered collection, the positions of the cards are important and you can only draw from the top (or Pearl Diver)
- Your discard pile is an ordered collection as well, you can not look through it and once something is covered, it's lost track of
- The trash pile is an unordered collection, you can look through it, the positions of the cards don't matter. There is no losing track of cards that end up in the trash, other than the fact they're not in their original place anymore
- Your hand is
I would think it's an unordered collection, meaning you can sort it to your own liking, but for Watchtower it might be important to consider it an ordered collection. So if you gain a card to the edge of your hand and move it to the top of your deck it's still the same card.