I heard that being able to Scry 1 'infinitely' lets you cut your deck to a position of your choice and Scry 2+ infinitely lets you stack your deck as you please (though, of course, you have to do it in a timely fashion). Is this correct? I saw something online about it but trying to confirm.
Unlimited “scry 1″ effects lets you cut your deck to the card of your choice, but not otherwise reorder it. To do this, you go through your deck fully once to see the order, then go through again enough times to get to where you want it to be cut to.
Unlimited “scry 2″ (or scry N, where N>1) effects allow you to order your deck in the order of your choice. To do this, you’re doing a bubble sort of your deck, scrying until you get to the desired top card, then keeping it on top and cutting to the desired next card as in Scry 1. Then you put those two cards on the bottom of your deck and find the card you want 3rd, and keep it on top of the deck until it’s under card #2, etc.
You can shortcut this so that it doesn’t take thousands of iterations, of course. If you’re going to do this at a tournament, explain it to the judge before the event so that they’ll be aware of what you’re doing.