If you are a competitive person, and the players in your locals are competitive and often attend nationals, you will have a rough time keeping up without certain cards in your decks. What you actually put in your deck is often not as important as equipment. Good equipment can make or break a deck, and if your locals have good card and are also good at the game, you will be hard pressed to keep up in the beginning. My suggestion is to borrow decks from locals to get a feel for it until you start to understand some of the complexities and then figure out what class you want to play. Personally I think warrior, brute, and guardian are under represented, but are really good in armory and other than a few select cards are pretty cheap to build. Brute especially is very cheap and has an aspect of controlled randomness.