A card is only face down in the exile zone if the effect that put it there specifically says so
And in some cases, you just need some quick money , and you might have to part ways with some of your collection to tend to more pressing matters
So, we have a linear spell rate we can modify linearly fueling a linear progression with diminishing returns over time
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In the case of Pokmon, it is of course the same, except for the detail that we dont have an official ban list for standard format (which is the one that is officially played) and it is extremely rare that we see an emergency decision from the Pokmon Company itself
Each color has different limitations for removal, such as black's inability to hit artifacts, so cards like Bedevil are stronger with two colors