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
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
Card list: Moltres ex (x2) Charmander (x2) Charmeleon (x2) Charizard ex (x2) Professors Research (x2) Sabrina (x2) Pok Ball (x2) X Speed (x2) Potion (x2) Red Card (x2) How to beat: Disrupt your opponent early on Assuming they take the second turn, draw the correct cards, and get perfectly average coin flips, your opponent needs four turns to stack six energy cards on Charizard ex
Abilities that apply "as [this creature] enters the battlefield," such as choosing a color with Diamond Knight, are also unaffected
CoroCoro later mentions that Shadow Mewtwo storms the single-player Mode, Ferrum League