While you're still gonna have to be quick to secure those pocket monsters (you're gonna have to move faster than Rapidash to secure them before they're gone, actually), there are a few retailers worth prioritizing
(2019-05-03) Karn's last ability can't get a face-down card in exile, even if you know it's an artifact card
Ink color is akin to factions or elements each ink has a general theme or playstyle (for example, Amber cards often focus on healing and support, Ruby cards tend to be aggressive damage dealers, etc.)
The card is very simple, if a monster from the opponent's side of the field attacks, Mirror Force destroys every monster on that side of the field that is in attack mode
We print out all the mythic rares from a set on these big pieces of paper, and we put them all up on the wall in the most commonly walked-through hall in the building