I'm Mr Bless, an italian magician. I like this trick cause is very easy to perform and spectators have good reactions. It is something that you can add in your close-up menu!

This is not the reputation maker some may make it sound like. But if you’re looking for a packet trick you can carry around, that doesn’t require a lot of audience participation (no remembering a card…) this might be perfect. It’s a cute little trick that is visual and kinda’ fun to do. My one, minor, complaint is that they’re not printed on Bicycle backs. I will say I did this for my wife, with a box of Bicycles on the table as well, and she didn’t notice a difference. At the current price point, it’s highly recommended!

Mick Trost’s “Unknown Card” packet trick is as mindblowing as it is easy to do. It’s in my wallet beside classics Lind Max Maven’s @family B’Wave”. Get this snd all of his packet effects. Great gif walk around and reset instantly.
Mick Benderoth aka Mystic Mickey

Nick Trost published routines for many ingenious packet tricks playable with standard cards, but he also published a number of "fun" effects with customized gaffs. "The Unknown Card" was one of these marketed effects. It was at one time published by L&L Publishing as part of a collection of 8 such Nick Trost packet tricks, all of which are fun and easy to do. The moment where the 10s and 4s are shown to have vanished creates a real strong reaction, and while the need to "pocket" the Unknown Card is an inherent weakness in the effect, the final reveal of The Unknown Card is an amusing kicker that generates some smiles. It's very easy to learn and perform, so you can put all the energy into making a good presentation. I've had good results and a lot of fun with this beauty. - BoardGameGeek reviewer EndersGame

This trick is extremely easy to do, and the mechanics of it are ingenious. This is Nick Trost at his most devious. I wish it were Bicycle stock instead of Hoyle, but what can you do? Buy it.