Cheapest priced copy (Commander 2013): $0.35 at Card Kingdom, near mint, their price list as of .
Thopter Foundry 
Artifact · Uncommon · Commander 2013 · #234
{1}, Sacrifice a nontoken artifact: Create a 1/1 blue Thopter artifact creature token with flying. You gain 1 life.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
7 printings · $0.35 to $5.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Double Masters | 222 | Uncommon | $0.39 | $0.49 |
| Alara Reborn | 133 | Uncommon | $0.59 | $5.99 |
| Commander 2013 | 234 | Uncommon | $0.35 | — |
| Commander 2016 | 237 | Uncommon | $0.39 | — |
| Mystery Booster 2 | 92 | Uncommon | $0.35 | — |
| The List | ARB-133 | Uncommon | $0.59 | — |
| The List | C16-237 | Uncommon | $0.35 | — |
One ruling from Wizards of the Coast
- 7 August 2020You may sacrifice Thopter Foundry to pay the cost of its own ability.