I am battling a few dragon battles as that is my daily focus. I started too late today, but I will settle for 4 chests, lol! I am battling in the Champion league, and I will also show you a few chests I opened in the previous two days.
I also regularly play Splintetlands, but I have not received a Dragon focus so far. I often go for 4-5-6 chests, but not in the Champion League. Mostly in the Silver III League. Once I reached the Gold III League.
Today I will have only 1 focus chest. Good luck and have fun.