This must be the single best combo (except for Stuffy Doll and Guilty Conscience) in the history of Magic. Panoptic Mirror + Glimpse the Unthinkable Panoptic Mirror allows you to Imprint an Instant or Sorcery. Then, at the beginning of your upkeep, you can play a copy of that Instant or Sorcery without paying it's mana cost. Glimpse the Unthinkable puts the top 10 cards of your opponent's library into their graveyard. Do the math. 6 turns=60 cards. That's a deck out. And thats providing the mirror was able to be played on the first turn and the Glimpse Imprinted onto it. In perfect conditions, if you went first, your opponent, assuming they draw no extra cards, would be at 47 cards when you had the Glimpse Imprinted. That means that it is now 5 turns until they deck out. And that's not even counting the other spells to speed up the process you might have. (This is assuming you're playing someone with a 60 card deck of course) But seriously, it would give your opponent that "the clock is ticking" sense. I need to get some Glimpse the Unthinkables.