All right, I went 6-3 and 6-3, with two Rakdos piles, those colors have excellent removal and pretty decent bodies on the 3CMC slot,
Weldfast engineer is a boss in limited, I combined with
augmenting automaton in both decks together they can make blocks very tricky for the opponent.
Make obsolete is one hell of a trick also, with all those servos and thopters floating around you can clear stalled boards and swing big time.
Sweatworks Brawler is also very solid if you pick one implement or a
weaponcraft enthusiast,
Frontline Rebel is also very good here if you can protect him with some tricks or
Pacification array.
Overall I liked this block a lot, the games can get quite intense, I also recommend picking up any vehicle you can coz we all know how good they are facing removal... especially on limited where there isn't a bunch of the instant speed ones.