Daily Reward for 4.18

For today's quest, I had to win 5 battles using cards from the Water splinter. Same as yesterday. I used the same strategy as yesterday too - a low Mana cost monster for tank and as many magic monsters as I could afford to add. The results were also exactly the same as yesterday - 7 battles, 2 losses, 5 victories. My prize was different today, though! Instead of 15 DEC, I won this -

I wonder what League I have to be in to get multiple rewards per day? Cause that's the League I want to be in right now. Tomorrow I think I'll try buying that $0.75 Quest Potion in the Shop before I begin my Quest, and I'll see if that changes anything for the better.