Playtested this deck for the first time at FNM and met some really great people. Totally a fun and memorable evening! Thanks to everyone and Atomic Comics Emporium II!
I lost a ton, which was expected, but learned a lot more about the game, card interactions, and meta strategy. I got some wins and really great combos, which shows me that the deck can hold it's own and quickly overwhelm if left unchecked.
Biggest changes to the deck were including counter spells (which I knew would be needed) and dropping the card count from 64 to 60. Reducing the deck size was extremely challenging, but through playing actual matches against really good opponents, the areas to trim became apparent.
There were almost too many artifacts, which left me with no hard counters or answers for the board. In response, I dropped Diamond Mare and Voltaic Servant from 4 to 3, as they could not swing over most creatures. I also dropped Tezzeret's Gatebreaker from 2 to 1, as the card did win me games, but was dead weight in other rounds. The same went for The Antiquities War, which became my win condition, but at 4 copies was too much. This was dropped from 4 to 3.
These drops allowed room for 4 counter cards, which I currently have 2 Disdainful Stroke and 2 Essence Scatter in the main deck. I found that I could deal with and recover from spell and instant negations, but could not recover well from a large board presence. Essence Scatter and Disdainful Stroke allowed me to counter the opponent's big monsters and Planeswalkers so I could survive longer and damage for game.
I'm sure more changes will be made, but really liking this deck's engine, card art, and feel. Cheers!