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Though it might sound dubious for anyone to already possess cards that won't be out for months, it's not impossible

A Collectors Box with 4 Dividers for Organization

Trainers Supporter to Set Up Arven will be essential, as he'll get the items you need to set up your Pokmon, like Buddy-Buddy Poffin TEF 144

You'll learn how to line up your choices with your collection goals

As long as you can get Utopia Beyond on the field with at least 2 materials attached to it, you can equip Stoic Challenger to Utopia Beyond and easily deal over 8000 damage in one turn since all of your opponents monsters attack would be reduced to 0 anyways.