Introducing MANY CARDS AT MANY COLORS by David J. Greene

There are expensive electronic devices that can tell you how many cards someone is holding... and how many of each color.

But what happens when the battery dies?

This does the same thing. No electronics. No signals. No risk.

Effect:

You turn your back before anything begins-and never turn around.

A spectator cuts off a portion of the deck and counts their cards.

You ask only one question, allowing them to put some cards back.

They are now left holding an unknown amount of cards.

This packet is placed somewhere completely out of sight.

The rest of the deck is handed to you.

You never look at the cards.

You take the deck, square it gently in your hands... and pause.

Then, without hesitation:

"You're hiding 27 cards... ...15 of them are red."

What You Get:

A 6-page, no-fluff method designed for real-world performance.

• One question
• No calculations
• No electronics

Just structure, subtlety, and certainty.

No batteries. No backup plan. No misses.