The system matches decks with similar weights against each other, and the higher the deck's weight, the more powerful the decks it is matched with
Given that Partner has featured in quite a few sets since it was introduced in 2016, we believe there is every chance that it returns in future sets , especially if it fits the theme of the set, as it does across the Assassin's Creed and TMNT MTG products
It's that, or collectors are suffering from serious FOMO
(Nitz even speculates that he may have been the one to unintentionally let this error slip by!) According to Nitz, while this variant is colloquially named the Ghost Stamp error, the design element printed on these cards is, in fact, an artifact of the printing process known as a trap. Essentially, traps are used in offset printing to make sure that slight variations in registration do not affect the overall look of the print itself by overlapping some of the colors
But that is how the idea came about and those were the first and probably only decks made for the mini cards