Topic: Card commonality across decks?

So trying to find cards that exist in multiple decks that I have saved but without searching for a card in the search bar one at a time.  Not sure if that makes sense.  Basically compare decks and show what is shared between them.  Doesn't have to be in all of them, but say if I have mana confluence in 3 of my 20 decks I want it to show that.  I am guessing there is no way, but you never know.  It would be cool if you exported your inventory if there was a column that showed what decks the card was in.