Watch it performed up close. Now think of how you could use this to your advantage.
One of the first effects I used with cards that sorta required me to have a spectator sign their name on the card is a sandwich effect. Essentially, a sandwich effect is about using two cards to magically materialize a selected card in between them just by waving them around the deck, or cutting them in the middle of the deck, if that’s what it took.
Now, the reason why I’m talking about this effect should be pretty obvious: most card effects involving a signed card is the perfect opportunity for the romantic magician to wiggle some personal details from their spectator. If they actually give you their number, it means one of two things: either they’re interested, or because they’re taken, they think you’re safe. This also means that you’d have to figure out which one they are over the course of your routine, and the sandwich effect, with its limitless variations, will allow you to do just that.
The nice thing about this routine is it requires very minimal sleights, but has a very powerful impact. For some reason, a signed card enhances the performance as it assures the volunteer that there are no duplicate cards or special gimmicks involved to make the effect happen. It may cost a pretty penny to constantly have to replace decks because of cards being signed and given away, but it’s not such a bad investment if you’re doing this for a living.
There are many other effects that use signed cards, chief amongst them, the ambitious card routine. However, since this is the month of “Love and Magic” and not the month of “Card Magic”, I’d like to save certain routines to discuss for that month, and the sandwich effect is one of those effective routines that I can’t quite imagine being done without signing the card first, lest people assume a duplicate.