Unknown Mentalist - Optik Deck
Optic Deck is an optical/visual memorized deck. You 'see' a number 1-52 in your mind's eye and you 'optically' or visually know what card is at that number. Similarly you 'see' any card in your mind's eye and you again 'optically' know what position the card is at.The stack looks very random, the suits look random, there is no red/black alternating pattern and even after reasonable scrutiny it would be almost impossible to spot a sequence, because there is none. Even magicians after being told that there is a stack involved will find it extremely difficult to spot the stack.
This is a monodistic stack meaning there are no repeating banks of cards. The underlying principle is probably a new approach in the field of card stacks. Optic Deck is very easy to learn and use.
There are no algorithms, no formulae, no brute memorization, no mnemonic phrases, no complicated rules. Best of all the card values and card suits do not have separate tracks to work out. You get both of them in one stroke instantly.
Stacks are a pet subject of mine. There are several stacks I created over the past couple of decades. But started releasing them only recently from 2015 starting with the Karma Deck which is still the number one best selling stack on Lybrary. A few of them like Sloka Deck, Monk Stack, Fun Stacks, Stebbins Surprise Stack etc. have been released but a majority of my stacks are yet to be released. Each of these stacks has its own specialty but the common property is they are all easy to learn and use. None of them need days or weeks of struggle to acquire. Of course, for every stack a little practice is always helpful in the early stages of learning that stack.
The strength of Optic Deck is its unconventional construction and lateral approach to learning it.