User blog comment:BlackMist4848/Guide to Deckbuilding 101!/@comment-25600444-20141230225854/@comment-4764137-20150102054847

I find that Item cards do well at about 6 copies, but not really less than that outside of Katana World. Impacts as of thus far seem to do best at 3-4 copies, since they tend to be finishers, outside of Katana World (Which I find it best to run 3 Lethal Formation or Super Lethal Formation, 1 each of whatever Secret Sword cards you put in, and about 4 copies of their Item, mostly cause of draw being a big aspect of their play.  Magic World can cash in on the 4 item thing too since it's not a huge deal to them.)  Control-oriented decks can get away with fewer monsters than normal, about 20... Even 18 is okay, from my experience. A standard deck should be fine with about 23 monsters. <> can reduce that by a couple or so due to Form a Party, and I find that any deck that runs Glory Seeker would be best to run about 20 Spells. Mist, if you want to talk deckbuilding, I can totally coach... I've been seriously considering starting a deckbuilding service, as it were.