The text on the zombie mason says:
Trash the top card of your deck. You may gain a card costing up to $1 more than it.
Is this a "blind play", i.e. do I make my decision to play the zombie mason without knowing what the top card in my deck will be (potentially trashing a really valuable card like a province)? Or can I look at the top card and then decide if I want to trash it or not (basically deciding if I want to play the zombie mason or not)?
From normal rules, I would expect that it is a blind play, as typically we are not allowed to look at cards in our deck, unless instructed to do so and the zombie mason does not give this instruction.
However, if it is a "blind play", it seems far too risky to ever actually use it (or at least not in later stages of play where valuable cards are in the deck).