Ordering blockers is a bit of a shortcut for what actually happens when multiple creatures are blocking an attacking creature
How to Engineer Scarcity: The "Pull Rate" Rarity is meaningless if everyone has it
Its all about finding the experience that fits what you love to collect and how you want to build your collection
Protect yourself by buying from shops that inspect and serial-track every box, verifying the shrink wrap shows the Pokemon Company logo, and avoiding suspiciously cheap listings
However, this is a one-in-a-million find, so adjust your expectations and consider a sensible approach: be aware of the opportunity if it comes to you, but do not spend a bunch of time searching out estate sales
As these cards are only awarded to the top performers in tournaments, they can provide a sense of accomplishment in addition to looking impressive