i post this deck and i am f2p, played 13 months now. i got all of those cards WITHOUT EVEN DOING BOX RESET. those extra sangans and draining shield i got lucky from selection boxes, as you ppl might aware that those box appear twice.
advice for f2p, just focus on diversity on cards that helps farming, not top tier cards. because farming events give more gems by doing so as f2p....
.... and let ranked duels/kc cup/ wcq be dominated by p2w. thats how Konami make money anyway (unless you are really lucky to be those few that manages to go to world championship as f2p, which is REALLY RARE, if ever exist...)