Cheapest priced copy (Time Spiral): $0.35 at Card Kingdom, near mint, their price list as of .
Brass Gnat 
Artifact Creature — Insect · 1/1 · Common · Time Spiral · #249
Flying
This creature doesn't untap during your untap step.
At the beginning of your upkeep, you may pay {1}. If you do, untap this creature.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Time Spiral | 249 | Common | $0.35 | $0.49 |