Dan and Dave Agatha by Irving Quant

This expertly crafted routine transforms Mr. Goodwin’s “Slap Exchange” (At the Expense of Grey Matter, 1989) by enabling four cards to be placed face-up in the deck, only to transpose with four others. Agatha simplifies the complex sleights typically required in earlier techniques, offering a straightforward solution to a well-known card challenge in the magic community.

Completely impromptu, this effect relies solely on sleight of hand and the innovative concepts of Irving Quant.