Stay away, it's p2w – Flick Arena Review

Completely unbalanced, shamelessly so. You'll struggle really hard against people with higher levels and higher amounts of rare cards. You'll struggle even harder if you refuse to watch tens of ads for in game currency and to speed up the timer for opening chests. The ads themselves sometimes blasts at loud volumes and may not have a mute or pause button. The ads bypass a phone's vibrate or silent setting to play its sounds. For the sake of your sanity, plug in head phones and don'f wear them during the ads.
Review by NoddingMan on Flick Arena.