It's nice to be able to earn one booster pack every day by doing the quest. That is if you don't forget about it (oops!) as I did a few days ago.
Today I've already completed my quest with only one defeat. Nice! Nothing extraordinary in the booster pack (including certain cards I was interested in).
But I am searching for a way to sell the booster pack without opening it. On Steem Monsters site there's the gift option, but no sell. I believe it is an option to sell those booster packs instead of opening them, I saw in one tutorial you can do that.
The idea is not to sell them all, but to sell when you need liquid STEEM to buy a certain card to upgrade, for example.
Today I managed to upgrade to level 2 Zintar Mortalis from the Death splinter, now having at least one summoner from each splinter to level 2. Well, I don't have any summoner for the Dragon splinter yet, so that would be the last one.