Making the Arena fair
I'm sure I can't be the only one who is cheesed off with 'opponents' using all their birds AND THEN GETTING 3 MORE
BEFORE YOU'VE USED ALL YOUR BIRDS?
To make it totally fair, remove the 'buy 3 more birds' function so everyone ONLY gets the 5 birds, any they gain via the meter & whatever spells they choose.
Oh, and rather than kicking you in the teeth by letting you think you're winning and then suddenly the opposing score increasing my a few million, show the opposing score at the start so you know what you need to aim to beat!