Conclusion By printing your own proxy cards you can gain access to cards you dont currently own, playtest your deck build and most importantly preserve your high value cards in friendly matches
Mindwrack Harpy
For Magic: The Gathering , theres the Power Nine, the most valuable of which is Black Lotus, and ones about to become available if youve got the money for it
So backstock is pretty much impossible to get, unless they reprint. Seeing all the backstock sell was a harbinger for Magelings Games, and the store wanted to buy more cards to keep up with the increasing demand
When to Buy, and When to Sell If youre on this site, youre familiar with the most basic tenet of Magic finance: buy low and sell high
The illustration for Internal Spawn of Evil, incidentally, was originally a sketch that illustrator Ron Spencer turned in as a joke for a real Magic card