public static String oraclize(String manaCost) {
        // converts RB to (R/B)
        String[] parts = manaCost.split(" ");
        StringBuilder res = new StringBuilder();
        for (String s : parts) {
            if (s.length() == 2 && colors.contains(s.charAt(1) + "")) s = s.charAt(0) + "/" + s.charAt(1);
            if (s.length() == 3) s = "(" + s + ")";
            if (s.equals("S")) s = "(S)";//for if/when we implement snow mana
            if (s.equals("X")) s = "(X)";//X costs?
            res.append(s);
        }
        return res.toString();
    }