Cheapest priced copy (Modern Horizons): $0.35 at Card Kingdom, near mint, their price list as of .
Farmstead Gleaner 
Artifact Creature — Scarecrow · 2/2 · Uncommon · The List · #MH1-222
This creature doesn't untap during your untap step.
{2}, {Q}: Put a +1/+1 counter on this creature. ({Q} is the untap symbol.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons | 222 | Uncommon | $0.35 | $1.49 |
| The List | MH1-222 | Uncommon | $0.35 | — |
2 rulings from Wizards of the Coast
- 14 June 2019Untapping an attacking creature doesn’t remove it from combat.
- 14 June 2019The untap symbol, {Q}, functions the same as the tap symbol, only mirrored. You can’t pay the {Q} cost if Farmstead Gleaner is already untapped, and you must have controlled the creature continuously since your most recent turn began in order to pay {Q}.