Its easy for a niche card to be strong within its niche - and sometimes a card like that is simply so strong that it takes a deck from being a fun idea into a crushing way to play Commander - but its far rarer for a card to work in decks that its not intended for
Fifth Dawn is one of my favorite sets, and its chock full of casual value
I define metagame dominance as the percentage of decks playing the card, times the number of copies per deck, divided by four
MTG publisher Wizards of the Coast released the first pre-constructed, 100-card Commander decks in 2011 (they were, by all accounts, pretty terrible), officially signalling a pivot towards the format thats influenced the design of news cards ever since
There are numerous commanders that avoid ever going back to the command zone
Proxy King also sells curated products like proxy booster packs, and they explicitly market their cards as looking and feeling like real cards (art, text, cardstock, finish)