What are your thoughts on Thought Sponge? It seems like a decent card draw engine, but competes for a slot with Jhoira, Weatherlight Captain and/or Yawgmoth, Thran Physician. I do like that the sponge supplies itself with its own +1/+1 counter, and that as long as you're sacing it on your opponent's turn, it will come back with a counter.
A couple other cards that stand out: Goblin Engineer acts as a pseudo tutor and Goblin Welder lite. I'm trying Metalwork Colossus to fill a similar role as Greater Gargadon, and combined with the Engineer it can provide us with an early sac outlet that is resistant to removal.
Mystic Forge is another Future Sight type effect that pairs well with our deck. Not as potentially game-breaking as Bolas's Citadel, but it comes down earlier and provides good card advantage.
Dockside Extortionist I'm not sure how to evaluate this card. It could be incredible in the right meta. Treasure tokens also provide self-sacing artifacts to trigger Marionette Master and the like.
Hey, I love the deck! Any updates? I've recently started branching out from my go-to EDH deck (I've been tuning and playing the same deck almost exclusively for ~6 years) and I've been really intrigued by the concept of Marchesa Robots! The list I'm toying around with is fairly similar to yours with some notable changes. I can put a list up when I'm not making changes quite so frequently .
A couple other cards that stand out:
Goblin Engineer acts as a pseudo tutor and Goblin Welder lite. I'm trying Metalwork Colossus to fill a similar role as Greater Gargadon, and combined with the Engineer it can provide us with an early sac outlet that is resistant to removal.
Mystic Forge is another Future Sight type effect that pairs well with our deck. Not as potentially game-breaking as Bolas's Citadel, but it comes down earlier and provides good card advantage.
Dockside Extortionist I'm not sure how to evaluate this card. It could be incredible in the right meta. Treasure tokens also provide self-sacing artifacts to trigger Marionette Master and the like.