I'm really glad they clarified the Must X or Y vs Must Either X or Y thing, I was looking for an answer to that and couldn't find one for a while.
The most important part is that when it says, "either" you have to choose one that you can do (if you can do either). There have been many games where I just chose the option I couldn't do and made the Treachery card have no effect essentially.
Still does not sound that clear to me:
The Ambush (errated) now reads: "At the beginning of the combat phase, each player must either turn each of his hidden cards faceup, or take 1 hidden card."
Even if I have no hidden cards, I could still choose to turn each of my hidden cards (none) and face no effect... No ?
I'd rather apply the rule that says "if ambiguous, interpret as worst case scenario for the player" here.
Edited by wlk, 07 February 2014 - 12:32 PM.