Foundations Commander · 2026 Commander precon
Keen Engineering upgrade guide
Budget upgrades, cuts and the full decklist for Sai, Master Thopterist.
Keen Engineering is a mono-blue Commander precon from Foundations Commander (2026), led by Sai, Master Thopterist. Out of the box it runs 40 lands, 10 ramp pieces, 19 card-draw effects, 6 removal spells and 3 board wipes, with an average mana value of 3.80.
Measured against a typical Commander build, it's lightest on removal. Its game plan leans on artifacts and tokens, so the plan below favors cards that push that. The $50 plan below makes 10 swaps for $48.63.
Deck health
$50 budget plan
Best upgrades for Keen Engineering
10 swaps for $48.63, built around artifacts and tokens. Prices as of November 6, 2026.
Add 10
Protection: deck has 1 of ~2 · #12 on EDHREC$1.89
Removal: deck has 6 of ~8 · #33 on EDHREC$2.92
Removal: deck has 6 of ~8 · #65 on EDHREC$11.77
Fits your Artifacts plan · #313 on EDHREC$2.58
Fits your Tokens plan · #191 on EDHREC$2.12
Fits your Artifacts plan · #272 on EDHREC$4.56
Fits your Tokens plan · #492 on EDHREC$1.51
Fits your Artifacts plan · #797 on EDHREC$16.61
Fits your Tokens plan · #1,056 on EDHREC$3.83
Proven staple in your colors · #17 on EDHREC$0.84
Cut 10
Trims you to 37 lands — the deck runs 40
Trims you to 37 lands — the deck runs 40
Rarely played (#14,733 on EDHREC) · Doesn't support the deck's plan
Rarely played (#22,153 on EDHREC) · Costs 6 mana
Rarely played (#9,312 on EDHREC) · Costs 10 mana
Costs 8 mana
Extra card draw: deck already has 19 (~10 is plenty)
Costs 6 mana · Extra card draw: deck already has 19 (~10 is plenty)
Extra card draw: deck already has 19 (~10 is plenty)
Rarely played (#13,207 on EDHREC)
Keen Engineering decklist
Commander (1)
- 1Sai, Master Thopterist$0.69
Creatures (29)
- 1Broodstar$0.23
- 1Chief of the Foundry$0.28
- 1Darksteel Juggernaut$0.29
- 1Duplicant$0.19
- 1Etherium Sculptor$0.41
- 1Foundry Inspector$0.31
- 1Graaz, Unstoppable Juggernaut$0.24
- 1Kappa Cannoneer$0.26
- 1Master of Etherium$0.30
- 1Master Transmuter$1.19
- 1Memory Guardian$0.30
- 1Meteor Golem$0.29
- 1Myr Battlesphere$0.24
- 1Myr Retriever$0.72
- 1Ornithopter of Paradise$0.41
- 1Padeem, Consul of Innovation$0.51
- 1Palladium Myr$0.29
- 1Psychosis Crawler$0.77
- 1Research Thief$0.27
- 1Scrawling Crawler$4.49
- 1Shimmer Dragon$0.23
- 1Shimmer Myr$0.32
- 1Silver Myr$0.23
- 1Spire Golem$0.30
- 1Steel Hellkite$0.22
- 1Steel Overseer$0.27
- 1Thought Monitor$0.30
- 1Vedalken Archmage$2.26
- 1Whirler Rogue$0.33
Instants (6)
- 1Aetherize$0.35
- 1Counterspell$2.57
- 1Launch Mishap$0.27
- 1Negate$0.17
- 1Pull from Tomorrow$0.13
- 1Thirst for Knowledge$0.30
Sorceries (2)
- 1All Is Dust$3.18
- 1Thoughtcast$0.74
Artifacts (19)
- 1Adaptive Omnitool$1.11
- 1Aether Spellbomb$0.21
- 1Arcane Signet$0.42
- 1Cultivator's Caravan$0.24
- 1Forsaken Monument$3.57
- 1Hedron Archive$0.24
- 1Ichor Wellspring$0.27
- 1Mazemind Tome$0.22
- 1Mind Stone$0.31
- 1Mind's Eye$0.59
- 1Misleading Signpost$3.44
- 1Nettlecyst$1.00
- 1Nevinyrral's Disk$0.26
- 1Skysovereign, Consul Flagship$0.32
- 1Sol Ring$1.22
- 1Soul-Guide Lantern$0.27
- 1Tamiyo's Logbook$0.25
- 1Thopter Fabricator$0.23
- 1Thought Vessel$2.36
Enchantments (3)
- 1Fall from Favor$0.30
- 1Propaganda$2.24
- 1Thopter Spy Network$0.27
Lands (40)
- 1Buried Ruin$0.27
- 1Darksteel Citadel$0.51
- 1Foundry of the Consuls$0.32
- 17Island$0.15
- 17Island$0.22
- 1Lonely Sandbar$0.26
- 1Remote Isle$0.26
- 1War Room$1.12
FAQ
How much is the Keen Engineering precon worth?
At current prices the 100 cards in Keen Engineering are worth about $53.22 as singles (cheapest printings, TCGplayer market price as of November 6, 2026).
What are the best budget upgrades for Keen Engineering?
For about $48.63, our top picks are Swiftfoot Boots, An Offer You Can't Refuse, Swan Song, Phyrexian Metamorph, Idol of Oblivion. The full 10-card plan with cuts is above, and the upgrade tool can rebuild it for any budget.
What should I cut from Keen Engineering?
Start with Remote Isle, Lonely Sandbar, Fall from Favor, Spire Golem. These are the least-played or slowest cards that don't support the deck's plan.
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