Is is the change Blaine did when he riffled thru a deck and asked you (the audience) to remember a card. Then he pulls a card and says "this isn't it" He then kind of "snaps" the card with hisother hand, an instantly it becomes the glimpsed card.
That is the Snap Change by Ed Marlo. It originally appeared in Marlo's Magazine, Vol. 2
. That's very difficult to find, however, so I suggest that, if you wish to learn it, you should pick up Jeff McBride's Art of Card Manipulation, Vol. 1.
The Classic Pass will take years to master for most. It is very difficult, and even once you have the mechanics down, it can take a very long time to make it undetectable.
Instant Replay is a flourish where you flick a card from the deck to your other hand. Simple Switch is a flourish where, as you are launching one card from the deck to your hand, your other hand is launching its card to the deck. This causes the two cards to switch places. For a slow motion video clip of Simple Switch, see the demo video here
Both flourishes can be found in The Art of Astonishment, Vol. 3
by Paul Harris, pp. 115, 119.