I made it to Gold I this season so I was able to get 30 reward chests. I had a problem with my browser and hit the refresh button and wasn't able to open my chests so I had to go check the peakmonsters explorer to see what I got. I am convinced the potions are snake oil as I got this GF card with no potions. 
Not a big fan of the new spread on cards either, I only got 1/3 of my chests that came up as cards. Oh well I guess there is always this season to find some more cards.