Cheapest priced copy (Modern Horizons): $0.35 at Card Kingdom, near mint, their price list as of .
Thornado 
Instant · Uncommon · Breaking News · #33
Destroy target creature with flying.
Cycling {1}{G} ({1}{G}, Discard this card: Draw a card.)
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons | 184 | Common | $0.35 | $0.49 |
| Breaking News | 33 | Uncommon | $0.35 | $0.49 |