yes, you can make an account (or log in with your existing Hive account) and try it out for free. In order to unlock rewards and more you'll have to pay 10$ for the summoner's Spellbook. I'm still offering a sign-up deal so if you make sure to use my Referral Link the first time you log in so your are sure to get extra cards if you ever end up playing for rewards.
Cheers,