Yeah it was a lot of chests! How many did you get?
Well honestly I'm more of a silver league player. At least my cards are only at the silver league level right now. But in the last days of the season I move to gold and play pretty well there with them. Which is great to then get those gold End of Season chests! :D
My apologies for the late reply, I hadn't really been on Hive to properly see your comment until now!
Yes summoner cards are definitely important. Especially if you're using the starter ones, because using those gives you less reward shares for your season chests. Since you play in bronze, you can use Rare summoners at level 2 so if you could level them to 2 that would be good. As it'll allow you to bring Rare and Epic cards at level. So if you have some monsters at level 2, it would be great to also get summoners at level 2.
You can also rent some summoners and cards to play if you don't want to buy them right away. Some diversity in summoners for different rulesets is great.