How do you define straightforward? Magic has a lot of cards, but formats restrict* the pool of cards that can be used, and within each format's legal cards, the majority of them are unplayable.
*(in the colloquial sense of the word restrict, except in vintage (and trivially in commander/EDH/Australian Highlander/Chromandercore), where cards are restricted in the magic sense of the words restrict)
*(in the colloquial sense of the word restrict, except in vintage (and trivially in commander/EDH/Australian Highlander/Chromandercore), where cards are restricted in the magic sense of the words restrict)