hey fade,
It pretty much depends on the kind of def decks you are facing, I posted a surge deck that works well in some situation under "current wars"-> crazyblood
The main thing is you need to anticipate on what your opponent throws at you. If you are using my surge deck for example and your opponent starts with
a one delay card and 3 hp like hatchet tiamat predator etc. you got low chance of surviving so if you got alot of decks starting with one delay cards put in EMP's
because they together with atlas kill all those insanely strong opening cards (tiamat. predator, hatchet etc.) if you are facing alot of slow roll decks like pumm pool azure reapers wall stall, you wanna use more cannon walker (siege+anti air) Also, The surge deck i posted is mainly a strike deck. So if it doesnt work,
Another surge deck is pumm pool. But this only works with dracorex or dementia (dementia is not that good)
So in sum:
choose a deck to begin surging with.
Adjust the cards to match the decks you meet.
If the surge deck you picked doesnt work pick another
deck and try adjusting it again.