We would recommend unlocking each deck just to get a feel for them and add them all to your collection, but if you want to jump straight into battles with real opponents, focus on the Black & White: Basic Blue, Red and Green decks as they give you a bunch of handy trainer cards for building your own deck
Hey, do you know whats also living and could make for a better wall than feeble human tissue
Promotions happened in Europe before with a unique Iron Moth stamped card exclusive to Europe
While Prosperity can be effective in certain situations, there are potentially better options like Blue Sun's Zenith, which not only allows for card draw but also shuffles back into the deck for repeated use
Baylen can turn your tokens into near endless mana, buff himself up to deal lethal damage, and draw you as many additional cards as you need
Abilities that apply "as [this creature] enters the battlefield," such as choosing a color with Diamond Knight, are also unaffected