Plunger Principle

A principle, most often used in card magic, wherein multiple cards are placed into the deck at various locations, but out-jogged from the talon. The performer then pushes those cards into the deck at one time, causing any/all cards between the out-jogged ones to in-jog from the deck.

The Plunger Principle can be used as a control, or as part of an effect, as in John Mendoza's Automatic Deck.