I still thinking that " will i reset box ultimate for second kuriboh, second mirror wall,second soul exchange, second super rush headlong? And then all new box incoming? I try to at lease complete 1 set of each box. That the F2P thinking for complete its card. I have yugi,kaiba,bandit,pegasus,bakura all of them level 40, that mean no more leveling up them to gain gems rewards.
You don't need all called "op" card. Just focus one deck you like. Don't follow meta deck, meta deck always changing. Just try to get card that synergize with your prefered deck