alright how I build decks are first I look for high hp than I see ther'e attack value than there mp if the're good I add them than I see there affect note: dont worry about how many cards you throw in. than I sepperate the kinds of cards than i see the cards I really need and add them to my deck until I have an equal amount of cards and make sure I have enough and not to much and there you go you have a deck hope this helps kh ccg players to make decks.