public String addToDeck(int indexFrom) {
        List<Card> cards = board.get(indexFrom);
        Card topCard = cards.get(cards.size() - 1);
        if (topCard.getRank().ordinal() == indexFrom) {
            deck.push(cards.remove(cards.size() - 1));
            return "";
        } else {
            return "Cannot add that to the deck, wrong rank";
        }
    }