Spellstash · Precon prices · Keen Engineering
Is the Keen Engineering precon worth it?
Commander: Sai, Master Thopterist
The worth-it math
Keen Engineering is $87.98 in singles.
67 of 67 cards priced at Card Kingdom, commander included. Refreshed daily. Beat that number sealed and the box is the deal. Miss it and singles win.

That is the price if you own none of it. You probably own some of it. Spellstash crosses off every card already sitting in your boxes before you buy anything twice.
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The deck · 67 cards
Commander (1)
Sai, Master Thopterist
$0.49Creatures (29)
Scrawling Crawler
$6.49Vedalken Archmage
$3.49Master Transmuter
$1.49Psychosis Crawler
$1.49Padeem, Consul of Innovation
$1.29Myr Retriever
$0.99Etherium Sculptor
$0.79Kappa Cannoneer
$0.69Ornithopter of Paradise
$0.69Palladium Myr
$0.69Master of Etherium
$0.59Steel Overseer
$0.59Thought Monitor
$0.59Broodstar
$0.49Darksteel Juggernaut
$0.49Duplicant
$0.49Foundry Inspector
$0.49Graaz, Unstoppable Juggernaut
$0.49Myr Battlesphere
$0.49Research Thief
$0.49Shimmer Dragon
$0.49Shimmer Myr
$0.49Silver Myr
$0.49Steel Hellkite
$0.49Chief of the Foundry
$0.35Memory Guardian
$0.35Meteor Golem
$0.35Spire Golem
$0.35Whirler Rogue
$0.35Instants (6)
Counterspell
$3.99Aetherize
$0.79Pull from Tomorrow
$0.49Launch Mishap
$0.35Negate
$0.35Thirst for Knowledge
$0.35Sorceries (2)
Artifacts (19)
Forsaken Monument
$4.99Misleading Signpost
$4.49Thought Vessel
$3.49Sol Ring
$2.79Nettlecyst
$1.79Adaptive Omnitool
$1.49Ichor Wellspring
$0.99Skysovereign, Consul Flagship
$0.99Arcane Signet
$0.79Mind's Eye
$0.59Cultivator's Caravan
$0.49Mazemind Tome
$0.49Mind Stone
$0.49Nevinyrral's Disk
$0.49Thopter Fabricator
$0.49Hedron Archive
$0.39Soul-Guide Lantern
$0.39Aether Spellbomb
$0.35Tamiyo's Logbook
$0.35Enchantments (3)
Lands (7)
You may own some of these cards already!
Most players own a chunk of a precon before they ever buy it. A free Spellstash account crosses off every card already sitting in your boxes, so you only pay for what you actually need.
Check what I already ownQuestions people ask
- How much does the Keen Engineering precon cost as singles?
- The full decklist prices out to about $87.98 at Card Kingdom (67 of 67 cards priced). Prices refresh daily, so the number moves with the market.
- Is the Keen Engineering precon worth it?
- Worth it starts with the money: Keen Engineering is $87.98 in singles. If the sealed price you are quoted beats that number, the box is the deal. If not, singles win, and you can skip anything you already own.
- Is buying Keen Engineering sealed or as singles cheaper?
- Compare the singles total on this page against the sealed price you are quoted. Singles also let you skip cards you already own, which is usually where the real savings hide.
- Is the Keen Engineering commander deck good?
- Power is a table question, but the value is measurable: the whole deck is $87.98 in singles. Run it through the free Spellstash check to see how the list stacks against the average build for its commander.
- What if I already own some of these cards?
- A free Spellstash account crosses off every card already in your collection and shows what the precon costs YOU, not a stranger with empty boxes.