With the exception of one store in Japan I had read about, I saw no evidence of retailers placing limits on products, and didnt feel I could count on the set being available by the time I travelled there on release day
The unique Ability on Unknown, called HAND, states that once during your turn, before you attack, if Unknown is in your active spot and you have 35 or more cards in hand, you can use this ability to just win the game

Small Crease (under 1/4th of the length of the card) Visible on the Back -3 points Visible on the Front -4 points Medium Crease (under 1/2 of the card length) Visible on the Back -5 or 6 points Visible on the Front -6 or 7 points Large Crease (under 3/4ths of the card length) Visible on the Back -7 points Visible on the Front -8 points Full Crease all the way through the back of the card -8 points (-9 points if visible on the front) Small Bent Corner Visible on Back -3 or -4 points Folded / Lifted Corners Visible on Front -5 points (more if big) Indents: Super small indent -1 point (-1 for additional indents) Medium indent -3 points Large indent -5 points or more Surface: Super small single scratch may be no deduction 1/4 inch scratch or more -1 point Too many scratches on holo to count -3 points Front has scratches exposing holo silver layer or white layer -1 point Front has PokeMold or other dust/finger prints -1 point Back has minor whitening (3 to 5 dots) -1 point Back has moderate whitening (6 to 10 dots) -2 points Back has major whitening (11 dots or lots of wear) -3 or more points Corners: Corner coming up (dented) -3 points Corner not rounded correctly -1 point Obvious corner miscut -1 point Whitening over the size of a pin dot -1 point Edges: Whitening on the edge -1 point Whitening on two sides of the card -2 points Whitening on all sides of the card -3 or more points White fuzz coming off the card on edges can suffer from -1 point A ding on an edge can suffer from a -3 point or more deduction depending on size of the damage

Its a really simple ability, but being able to consistently play a three-mana card on turn two is hard to beat in so many different formats
The first is that you may not get the total value of your cards
Then you may sacrifice this land