I have an effect like Courser of Kruphix that is revealing the top card of my library. I'm trying to avoid revealing extra hidden information about what cards I'm playing in my deck to my opponent while resolving effects that manipulate cards in my library. The relevant Oracle rulings on it state:
If the top card of your library changes while you’re casting a spell, playing a land, or activating an ability, you don’t reveal the new top card until you finish doing so. This means that if you play a land from the top of your library, you can’t look at the next one until you’ve handled any replacement effects that modify that land entering the battlefield, such as that of Vesuva.
While playing with the top card of your library revealed, if you draw multiple cards, reveal each one before you draw it. If you put multiple cards on top of your library at once, reveal only the one new top card.
It's clear drawing multiple cards will reveal more hidden information to my opponent than just the top card of my library before and after the spell's resolution.
Are there any other deck manipulating actions that I can take that would reveal more cards than just the top card of my library before and after the spell's resolution? Some effects I'm thinking of are:
- Cards that shuffle multiple times during their resolution like Green Sun's Zenith. Is the top card of my library after the first shuffle but before the second shuffle revealed?
- Cards that search a library for a card like Polluted Delta's activated ability. Assuming that the card I search for and put on the battlefield is the top card of my library, is the new top card of my library revealed before I shuffle?
- Cards that can be played while searching your library, which I think is exclusively Panglacial Wurm. If Panglacial Wurm is the top card of my library and I cast it while searching my library, is the next top card of my library revealed after moving Panglacial Wurm to the stack? Is the next top card of my library revealed before or after I complete searching?
Alternatively, are there deck manipulating actions that I can take that change the top card of my library don't end up revealing the intermediate cards?
- The first Oracle ruling points out some instances where manipulating the library won't have intermediate cards revealed. Are these the only effects of that type?
I asked about the interaction with Green Sun's Zenith in the Magic Judge Chat:
I control a Courser of Kruphix which is revealing the top card of my library. I cast Green Sun's Zenith to find a creature, and during resolution, the card's text says that I shuffle twice. After the first shuffle but before the second, do I reveal the top card of my library? Or do I wait until after the second shuffle?
I was told:
Yes, you reveal the top card of your library between the two shuffles.