Now we're getting down to the really tough ones. Invent Superiority, lead by Breya, Etherium Shaper, is basically an Esper artifacts deck the happens to have access to red cards as well. WUB and UR artifact decks are both well-explored territory in EDH, but being able to take them both and mash them together probably opens up some new territory unavailable to either version. If nothing else it finally gives us a home for the new R/B version of Daretti.
There isn't much of a need to analyze what this deck does or what it's about: artifacts and the inherent synergies thereof. Now, I play in a group that shies away from going infinite to win games. Occasionally we have "Oops! I win!" moments as we discover some combination of cards we thought were merely synergistic actually go a little further than that... but as a rule we just stay away.
Building around Breya to maximize synergy as hard as we can, but without going to far and breaking into combo territory is going to be tough. I suspect this is the deck where we'll all end up accidentally going infinite once or twice even if we're trying not to.
For now I'm not going to worry too much about that, though, as this is a hypothetical thought exercise after all. My goal is just to get value and synergy out of artifacts and artifact-related cards.
Daretti, Ingenius Iconoclast
Tezzeret, Agent of Bolas
So first up, we've got a trio of Planeswalkers that I'd consider pretty well essential. Daretti is mostly here because where the hell else is a R/B 'walker with some artifact synergy going to get played? And, I mean, he's good, too. That helps. Dack is just really good at stealing Sol Rings and setting up a big Open the Vaults. And Tezzeret is also just a super-obvious Artifact-centric Planeswalker. I doubt any need more explanation than that. I skipped OG Tezzy because he probably goes infinite somehow but I'm too lazy/busy to check.
These are probably the three red cards I'm most excited to introduce into an Esper environment. Well, aside from the original Daretti, but he's already in, thankfully. Having Welder and Sharuum in the same deck just seems insane to me. Scrap Mastery is also just really obvious. And Combustible Gearhulk is mostly just new hotness. Maybe not the most essential card but I'm definitely excited to try it out here.
Muzzio, Visionary Architect
Powerful duo of blue artificers. Love them or hate them, they are definitely what I'd call essential.
Disciple of the Vault
Degenerate black cards that make killing our artifacts a suicidal proposition, and happen to synergize with our commander as well. Perfect fit, and I'm roughly 70% certain they don't actually combo off with the stock list.
Angel of Invention
Thopter Spy Network
And, of course I'm unable to stick to just 10 cards with this one. Hell, getting down to 12 cards was brutal enough. But we need some more Thopter/Servo love up in this deck. There are, possibly, not the optimal choices, but Angel is just a splashy new mythic that we're all probably a bit eager to see in action, and Thopter Spy Network draws cards.
As much as I was not so hyped about Breya herself, I am pretty eager to play this deck. It seems like this will be a bit of a flavor home run, in that one can endlessly tune and tinker with this list, constantly adjusting the pieces to get the machinery working just right. Much like an Artificer would.
But I suppose that's all I've got for now. Let me know what you're excited to add down in the comments.