He passes his hand over the cards, and they visibly and instantly transform into a fan of Jumbo Cards, four times bigger than normal size playing cards.
The effect can also be performed in reverse by transforming a fan of Jumbo Cards to a fan of normal size playing cards. This reverse presentation is effective in a routine combining the Diminishing Cards effect. You transform the Jumbo Cards into regular size playing cards, then make them smaller and smaller till they finally vanish.
We supply you a very special mechanical outfit, which makes the trick self working. All you require are a few handling trials, to handle the apparatus smoothly and correctly without fumbling. Complete with instructions.