After some testing, I found that I liked this slimmed-down, modified version of your deck.
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55p 55p 576 576 576 576 576 576 576 576 576 576 576 576 576 58v 58v 58v 74b 74b 74b 779 779 779 77a 77a 77a 77a 77a 77a 8pm
Though it's been said many times many ways, way too many cards in what you had, so I tried my best to bring i down to 30, and succeeded.
Changes:
Goodbye, BH, Dragons, Chargers, EQs, Wardens. No room for you in the new deck, alas.
Steel Golems: Nice solid hitters, at a respectable 6 damage and monster 9 hp for just 4
, these are the backbone of your damage.
Antlions: Like Golems, only less so in about every respect (Aside from cost: damage, they win that).
Added Shield: 2 out of 30 is much, much better than 1 our of 50, so I made it so. Might have considered adding another if the shield was better.
Elite Oty: I took in your 12 upgrades and made sure not to go above that, but Otys, along with Antlions, and something that really needs that upgrade to be as strong as it can be. Along with your Gravity Shields, these ensure that your opponent's creatures don't damage to get to your hp.
Pulvies: Well,
/
duo, hard to resist putting these in, as they help ever so much against everything your Otys and Shields cannot handle. I am aware, though, that these are rare, so if you don't own any, replace them with Momentums, Wardens, or whatever you desire, so long as it's not too expensive.