Board Thread:Question and Answer/@comment-135.23.69.203-20150202061717/@comment-25000380-20150202233313

As they said yes, with time you'll have a lot of N cards to spare, what you'll need it's the rare medals to buy those arcanas ^^

Unfortunately the only way to make it faster is to use the Arcana + as Fjbros said, but they are really hard to get so you'll probably can't count with these to max a card Atk/Def.