The chance of getting a specific card is the same in a double draw deck. But because there are up to 12 cards of one type it can even happens that in a turn it is possible to draw two of the same card or drawing card 7 or up. Imagine being standing against 8 Devourers at round 4 being locked down on my side due never getting any quanta anymore. Or a stall deck with at least 8 miracles?
Many not so well working decks are working very well in double draw
A nice example is one of the Pdial decks.
Hover over cards for details, click for permalink
4vj 4vj 4vj 4vj 4vj 4vj 715 715 718 718 718 718 718 718 71a 71a 72i 72i 72i 7gl 7gl 7gl 7gl 7gl 7gl 7i6 7i6 7i6 7q9 7q9 7q9 7q9 7q9 7q9 8pk
It is even possible to remove the Physalias or working with DimShields (3x
instead of
mark) as an Arena defender deck.
Some tests in the gold arena showed me an average win rate with my mono gravity deck against single draw decks of proximately 80%.
Against double draw decks it is around 35%. In the trainer I tested several different decks. Against single draws win rate between 60 and 100%. Against double draws never won above 60%.
I had also a PDial deck as defender in the gold arena: The deck won 75% of all games and many cards was not even being upped! It was a double draw deck.
An possible solution is: Double draw (aka Dexterity) costs 20 skills without card doubling and 40 with card doubling.