Loot box opening??

I was too lazy to do the daily treasure chest quests.. so I just didn't do them, and ended up with over 10,000 hearts. I decided to open a 200-heart chest for the first time in a while. Normally, you'd expect experience points, right(?) but maybe because it's been so long, I got a booster item?? A one-hour one at that.. wow. What a surprise. Anyway, thanks!