Cheapest priced copy (Commander 2021): $0.59 at Card Kingdom, near mint, their price list as of .
Steel Overseer 
Artifact Creature — Construct · 1/1 · Rare · Core Set 2020 · #239
{T}: Put a +1/+1 counter on each artifact creature you control.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
15 printings · $0.59 to $69.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Brothers' War Commander | 164 | Rare | $1.49 | — |
| Commander 2021 | 267 | Rare | $0.59 | — |
| Duel Decks: Elspeth vs. Tezzeret | 44 | Rare | $0.59 | — |
| Edge of Eternities Commander | 144 | Rare | $0.69 | — |
| Foundations Commander | 290 | Rare | $0.59 | — |
| Jumpstart 2022 | 798 | Rare | $0.69 | — |
| Magic 2011 | 214 | Rare | $0.79 | $8.99 |
| Core Set 2020 | 239 | Rare | $0.69 | $2.49 |
| Kaladesh Inventions | 27 | Special | — | $69.99 |
| Fallout | 241 | Rare | $0.59 | $1.99 |
| Fallout | 487 | Rare | $4.49 | $3.49 |
| Fallout | 769 | Rare | — | $4.49 |
| Fallout | 1015 | Rare | — | $2.99 |
| Core Set 2020 Promos | 239p | Rare | $0.79 | $3.99 |
| Core Set 2020 Promos | 239s | Rare | — | $4.99 |
One ruling from Wizards of the Coast
- 12 July 2019Steel Overseer's ability puts a +1/+1 counter on each artifact creature you control, including Steel Overseer.