Hello my friends!

So, lazy me was brain-storming (in bed) all this morning and was thinking about an idea i've long wanted to develop.
The idea is that during a performance (which would include some form of backing music) A sequence such as tearing a card into 4 pieces would be performed, then, the music would begin playing in reverse, everyone would move in reverse, all events would be reversed, and the 4 pieces would be restored.
So it's kind of having someone hitting a `rewind` button mid-performance. I believe David Copperfield did something like this with a sawing in half as I recall.
A particular idea that stood out to me was, being able to perhaps drop an entire deck on the floor, maybe make it look like a mess-up. Then, with the same `rewind` theme, have the cards reassemble and float back into your hand. The possibility I see for this is for a long string of fishing line to run through the centre of each card, and then have a motor-reel to pull the cards back up to my sleeve/hand.. do you know if anything like this is on the market? or even possible? the problem I foresee is the thread becoming tangled on the `drop`.
So my two questions I bring to you today my amigos are:
- Would this reverse-dropping deck idea be possible/purchasable, are there any similar substitutes?
- What other effects would you recommend for this theme?
Thanks guys!
- DJay