>Maybeboard

1 Darksteel Citadel
1 Inventors' Fair
1 Mishra's Bauble #Can be sacked or used as rotation
1 Power Depot
1 Sulfurous Springs
1 Swamp
1 Temple of Triumph
1 Bag of Devouring
1 Chromatic Star
1 Dockside Chef
1 Hope of Ghirapur
1 Implement of Improvement
1 Manifold Key
1 Nihil Spellbomb
1 Retrofitter Foundry
1 Rites of Initiation
1 Sticky Fingers
1 Akiri, Line-Slinger
1 Arcbound Ravager
1 Ashes of the Abhorrent
1 Boros Signet
1 Costly Plunder
1 Deadly Dispute #Better costly plunder.
1 Determined Iteration
1 Ethersworn Canonist
1 Fellwar Stone
1 Hide // Seek
1 Illusionist's Bracers
1 Impact Tremors
1 Indulge // Excess
1 Intangible Virtue
1 Jandor's Saddlebags
1 Kalain, Reclusive Painter
1 Liquimetal Coating
1 Loyal Apprentice
1 Mechtitan Core
1 Mind Stone
1 Moonsilver Key
1 Mycosynth Wellspring
1 Myrsmith
1 Rakdos Signet
1 Servo Schematic
1 Slobad, Goblin Tinkerer
1 Smuggler's Copter
1 Steel Overseer
1 Swiftfoot Boots
1 Underworld Breach
1 Voltaic Servant
1 Breya's Apprentice
1 Burnished Hart
1 Chief of the Foundry
1 Chromatic Lantern
1 Cloud Key
1 Descent into Avernus
1 Doomed Artisan
1 Eerie Interlude
1 Gut, True Soul Zealot
1 Ingenious Artillerist
1 Inspiring Leader
1 Inspiring Statuary
1 Mobile Garrison
1 Monologue Tax
1 Mortify
1 Pack Attack
1 Painful Truths #8.0; Draw. Non-dependent draw? Oke-ish.
1 Prosperous Partnership
1 Quicksmith Genius #6.5 - 9.5. Graveyard filler. Really good combined with engineers. Works well with commander. Turn 1 Ramp, Turn 2 commander, Turn 3 play & sac?
1 Savai Crystal
1 Scrap Welder #7.0 - 7.5, Recursion. Worse engineer. Bad as it cannot really bring 0 mana artifacts back.
1 Sculpting Steel #6.0 - 9.0, copying. Depends on average worth / CMC artifacts in your deck. At its worse 3 mana copy ramp? Flexible.
1 Seize the Spotlight
1 Shimmer Myr #6.0 - 9.0, flash good.
1 Thousand-Year Elixir
1 Trash for Treasure
1 Umbral Mantle
1 Xorn
1 Zirda, the Dawnwaker
1 Aetherworks Marvel
1 Dross Scorpion
1 Erebos, Bleak-Hearted
1 Excavation Technique
1 Jhoira's Familiar #6.0 - 7.5? More expensive foundry engineer? Not sure if worth. Depends on % artifacts and CMC.
1 Kurkesh, Onakke Ancient
1 Mana Echoes
1 Mystic Forge
1 Nevinyrral's Disk
1 Osgir, the Reconstructor
1 Pitiless Plunderer
1 Prototype Portal #Maybe to slow. Idea is to exile Artifact lands to make copies of them, but how often will you get to turn 4 with one dispensable in your hand? Will it help the game plan?
1 Rebbec, Architect of Ascension
1 Smothering Tithe
1 Solemn Simulacrum #9.0. Good sac. target -> 2 treasures. If you can copy its also really good (a.k.a. Mimic vat, portal)
1 Sram's Expertise
1 Sword of the Paruns
1 Trading Post
1 Unwinding Clock
1 Blinkmoth Urn
1 Curse of Conformity
1 Darksteel Juggernaut
1 Eldrazi Monument
1 Goldspan Dragon
1 Kuldotha Forgemaster
1 Rain of Riches
1 Scrap Mastery
1 Sly Requisitioner
1 Ugin's Nexus
1 Bolas's Citadel
1 Coveted Jewel
1 Noxious Gearhulk
1 Sun Titan
1 Ugin, the Ineffable
1 Myr Battlesphere
1 Ruinous Ultimatum
1 Organic Extinction
1 Blood for the Blood God!
1 Metalwork Colossus
1 Mycosynth Golem