The ZIG ZAG CARD is a super cool illusion that can be performed really close up. Have a good look at the playing card that is inserted in the housing. When you push the card across and then pull back the middle section, a fake piece of card will move back and forth. This creates the illusion that the card is normal.
The playing card can be removed for the start of the trick and shown to be normal. It is inserted and the magic happens.
You can explain to your audience that this puzzle is similar to the 'sawing a lady' trick.
Practice your magic and perform it well!