This looks amazing!!

You openly shuffle a deck & have a card selected, have signed & buried inside the deck.
Now introduce a bunch of clear balloons.
The spectator chooses any balloon and you place it into your open hand.

The deck is now openly slammed into the balloon and the deck is visibly pulled inside!
The entire deck is now seen encased inside the balloon!

To go a step further you inflate the balloon and shuffle the cards by shaking them around inside the balloon. You now openly grab the spectators selection through the wall of latex and pull it out of the still inflated balloon!

Everything is immediately handed out as a souvenir…..the signed card and the balloon with the deck sealed inside are completely examinable!