Absolutely! Good cards can make a difference.

Even if you don't want to invest your time.
Do consider buying few gold, lengendaries and gold legendaries from Monster Market , I have feeling this game go mainstream and do well.
So if you invest on this seasons cards.
Few seasons later. The price is mostly likely to increase.
Not a financial advice, always do your own research and consult experts of this game to find out which cards to invest.