How to set card face for deck?

Is there a way to set the card face for your decks? it seems kind of random?

There is no way to do this currently. I’ve seen this asked before though so maybe if enough people ask they will implement it.

yeah, because my main deck has a lot of sentimental value to me … I’d like to give it an appropriate face…

It has something to do with rarity, faeria cost and mythic/non-mythic. You can try switching between mythic and normal version of cards to get a different image for the deck.