I got this answer from Damon regarding search effects:

> Rule Question:
> If I search my deck do I have to find something? If e.g. the story
> "The Dreams of Kingsport" gets triggered and I do not want to put a
> card into play (maybe because my deck is already low on cards) do I
> still have to "find" a card if a fitting one is in my deck?

If the card does not require you to reveal a set of cards to search
and put into play the card, no. You can choose to not find the card.
It is a bit of a finessed thing, essentially we don't make rules that
must be enforced that cannot be enforced within the game.

Damon Stone
Associate LCG Designer
Fantasy Flight Games