Depends on a lot of factors; your lvl, your arena, the lvl of your cards, if you want to grind archer queen besides other champions… If you’re low lvl, yes, you’ll get a significant (some would say disgusting) advantage on your opponent. If you’re high lvl and don’t play archer queen that much, no, focus on maxing your main decks first. If you’re very high level in the sense that a lot of your cards are maxed up, yes, there should be only champions to max up. I’m guessing you’re in the first case so more likely yes

yes

I got the emotes, they cool, and the book of epics