Golden Deck:

As can be seen in the image above, in a match in the silver league 3, using 7 golden cards (1 summoner + 6 monsters) you get a 70% bonus on the DEC gain.

This may seem distant or difficult, but believe me, I was able to make this deck only by renting the cards at https://peakmonsters.com/, in which case the rent of the cards was a total of $ 0.14, an amount in which I didn't even invest, as I used the balance of Hive Backed Dollars (HBD) that I get on the site https://peakd.com/ just voting or creating posts, I focused on the letters that had the lowest cost, in the case daily cost at 0.001 or 0.002 USD.
I had an average gain of 2 to 3 DECs per game and after starting to use the cards (when the mana limit allows), when I manage to place all golden cards in the slots the gain is frighteningly greater.
Another point is that the rented cards give you the power needed to move up to more leagues, so you improve your daily quest in addition to the end-of-season rewards.
So, what we can do is try to rent the golden cards, since the cost benefit is very large, the DEC farm improves and you move up the league.
History of Battles:

We can see a very high DEC win history, where the win was lower, it was because it was not possible to use the golden cards due to the type restriction of the match
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