Sai, Master Thopterist serves as the engine of this mono-blue artifact deck, generating a growing swarm of 1/1 flying Thopter tokens every time an artifact spell is cast, while cost-reduction effects and artifact-based mana allow the deck to chain spells rapidly and snowball its board presence. The deck wins through combat by leveraging its artifact count to power up threats like Broodstar and Kappa Cannoneer, which become massive and difficult to block as artifacts accumulate, or by draining opponents through card draw payoffs like Psychosis Crawler dealing damage with each card drawn from the deck's extensive draw engines. Counterspells, pillowfort effects, and a board reset provide resilience, while the commander's sacrifice outlet converts excess tokens into fresh cards to keep the artifact chain going.

Keen Engineering decklist

• All Is Dust
• Broodstar
• Kappa Cannoneer
• Master of Etherium
• Master Transmuter
• Misleading Signpost
• Pull from Tomorrow
• Research Thief
• Shimmer Dragon
• Thopter Fabricator
• Thopter Spy Network
• Thought Monitor
• Vedalken Archmage
• Adaptive Omnitool
• Cultivator's Caravan
• Darksteel Juggernaut
• Duplicant
• Forsaken Monument
• Graaz, Unstoppable Juggernaut
• Mazemind Tome
• Mind's Eye
• Myr Battlesphere
• Nettlecyst
• Nevinyrral's Disk
• Psychosis Crawler
• Scrawling Crawler
• Skysovereign, Consul Flagship
• Steel Hellkite
• Steel Overseer
• War Room
• Aetherize
• Counterspell
• Etherium Sculptor
• Fall from Favor
• Launch Mishap
• Memory Guardian
• Negate
• Padeem, Consul of Innovation
• Propaganda
• Tamiyo's Logbook
• Thirst for Knowledge
• Thoughtcast
• Whirler Rogue
• Aether Spellbomb
• Arcane Signet
• Chief of the Foundry
• Foundry Inspector
• Hedron Archive
• Ichor Wellspring
• Meteor Golem
• Mind Stone
• Myr Retriever
• Ornithopter of Paradise
• Palladium Myr
• Shimmer Myr
• Silver Myr
• Sol Ring
• Soul-Guide Lantern
• Spire Golem
• Thought Vessel
• Buried Ruin
• Darksteel Citadel
• Foundry of the Consuls
• Lonely Sandbar
• Remote Isle
• 34× Island