congrats on your first pack. I bought a few but have not opened yet. I play with rental cards and play rather badly. There is no difference between these and the free ones except that you own them. They count towards your collection power, you can rent them out, sell them our use them to blend into better versions of the card.
I'm still very overwhelmed by game play itself but I was lucky to have bought a few packs of cards before the game started. They are are alpha cards so I have enough power to reach Silver. But, I'm terrible and have never made it there lol.
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