Bastion Inventor
Tracked across real Commander games played through TurnZero HQ.
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What it does
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Hexproof (This creature can't be the target of spells or abilities your opponents control.)
Rulings
8 official rulings, in the order Wizards published them.
- 2017-02-09
Improvise can’t be used to pay for anything other than the cost of casting the spell. For example, it can’t be used during the resolution of an ability that says “Counter target spell unless its controller pays 3.”
- 2017-02-09
Equipment attached to a creature doesn’t become tapped when that creature becomes tapped, and tapping that Equipment doesn’t cause the creature to become tapped.
- 2017-02-09
When calculating a spell’s total cost, include any alternative costs, additional costs, or anything else that increases or reduces the cost to cast the spell. Improvise applies after the total cost is calculated.
- 2017-02-09
Tapping an artifact won’t cause its abilities to stop applying unless those abilities say so.
- 2017-02-09
Improvise can’t pay for , , , , , or mana symbols in a spell’s total cost.
- 2017-02-09
If an artifact you control has a mana ability with T in the cost, activating that ability while casting a spell with improvise will result in the artifact being tapped when you pay the spell’s costs. You won’t be able to tap it again for improvise. Similarly, if you sacrifice an artifact to activate a mana ability while casting a spell with improvise, that artifact won’t be on the battlefield when you pay the spell’s costs, so you won’t be able to tap it for improvise.
- 2017-02-09
Because improvise isn’t an alternative cost, it can be used in conjunction with alternative costs.
- 2017-02-09
Improvise doesn’t change a spell’s mana cost or mana value.
Rulings are Wizards of the Coast's own, mirrored from Scryfall and refreshed nightly.
In the 99
Every deck whose current list includes Bastion Inventor, whatever its commander.
Most played under
| Commander | Decks | Games | Win rate |
|---|---|---|---|
| Sai, Master Thopterist | 1 | 0 | — |
Colors it shows up in
- Mono-Blue 1 deck
Bastion Inventor price history
The Aether Revolt #30 printing, as Scryfall reports the TCGplayer market. Updated nightly. Click any version below to chart its price.
Every recorded price change
| Date | Non-foil | Foil |
|---|---|---|
| Oct 26, 2026 | $0.04 | $0.25 |
| Oct 22, 2026 | $0.04 | $0.25 |
| Oct 6, 2026 | $0.03 | $0.25 |
| Sep 28, 2026 | $0.04 | $0.25 |
A row is recorded only on nights the price moved, so each price held until the row above it.
Every version of Bastion Inventor
2 printings, newest first. Prices are the market figures Scryfall publishes, refreshed nightly. A printing with no figure shows a dash rather than a zero, because Scryfall publishes none for some of them. Click a card's art to chart that version's price above.
- Normal
- $0.23
- Normal
- $0.04
- Foil
- $0.25
Prices from Scryfall, which tracks the TCGplayer and Cardmarket markets. They move daily and are a guide rather than a quote. Search TCGplayer for Bastion Inventor. It runs a name search across every version, which covers the printings TCGplayer publishes no direct link to.
Aggregated from Commander games tracked in TurnZero HQ. Every figure counts decks and games only. No individual deck list, player or playgroup is identified. Win rates are withheld below 5 completed games, where the sample is too small to mean anything.
