So you don´t make 30 cards deck without an Eternity afraid to deck out?
You have 60 cards, if you wanna win by decking the enemy deck out, you have to make a deck with that purpose, but you wanna win by doing damage, so you have to worry about doing more damage than our opponent, not about decking out.
Abou the shielding, how many shields have in the game? how many are invunerable? how many decks people imune the shield? You are trying to make a deck that can beat every deck, but this game is a paper, scissors, rock, game. You won´t be able to make a deck that can beat everything.
A simple rush unupgraded deck can beat your deck.
I´m just helping you out to get the voodoo doll combo and dune scorpion combo. Not to solve every problem...impossible