I rented these gold foil cards to reach the SILVER I. It cost me around 1400 DEC and it is very hard to get the cheap price unless you are quick enough to buy it in split seconds (good luck with that! lol)
Here are my SILVER I season rewards with 18 chests.
I only get a common gold foil and a rare card, the rest are just worthless compare to the DEC I used to rent for power. I guess I'm not that lucky today and it's very disappointing losing those 1400 DEC to have only these cards in season rewards. Better luck next time for me. Lol