Most importantly, giving your demon deck that would otherwise just be heavy on black access to blue is bound to be useful, giving it access to stronger draw spells and counterspells
Most other formats are more likely to dabble in crime, running one or two cards which care for the mechanic and relying on their existing interaction to fulfill the actual crime part
This rule lets you use flicker effects like Teleportation Circle and Conjurer's Closet to exile whatever you reanimated, then bring it back into play as a new instance of that permanent thats no longer affected by Moira and Teshar
While many are collectors, there are others who plan to re-sell particular cards for an exorbitant amount of money
Create a strategy based on your budget and then, after you have hit your sealed product limit, the best thing to do is set a budget and a timeline for buying single cards
Crime // Punishment are the highest charting three-color card