but tbh. you have the ability to farm or pay. that is a good way. I don't know if you have T13 runes, but players with T13 runes get less profit from runes t12 -> t13 than from 500 cards and the rune upgrade is way more expensive
in the end i think we can upgrade more than 3k cards tell me how much time someone must waste for upgrade cards ? this is RoM or metin? i love ROM bcs he is not like metin but this start be like metin