quoting myself here:
The less cards you have, the more predictable and consistent a deck becomes. Consistency in a deck will help you determine whether a deck is successful or not. Some decks are consistently bad (needs to go back to the drawing board) while others are good (needs minor tweaking).
A lot of beginners seem to make the mistake of just throwing a bunch of useful/powerful cards in a deck. When they lose to me they wonder why? 
One must grasp the concept that:
-Adding a card to a deck reduces the chances of drawing a different but equally useful(relative) card.
cards you want early:
-9 pillars
-6 devourer (you want early to harass their quanta production
-5 steals (steal the pillars/tower, dont think, just do and do it early)
cards you want later:
-5 drags
-3 drains (control and when you have LOTS of quanta, which you will)
-1 dusk
-1 night
this deck is now successful. 8)
beat lvl 5s a couple of times now...
