Cheapest priced copy (Commander Anthology): $0.35 at Card Kingdom, near mint, their price list as of .
Sulfurous Blast 
Instant · Uncommon · Time Spiral · #180
Sulfurous Blast deals 2 damage to each creature and each player. If you cast this spell during your main phase, Sulfurous Blast deals 3 damage to each creature and each player instead.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
6 printings · $0.35 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Anthology | 88 | Uncommon | $0.35 | — |
| Commander 2011 | 137 | Uncommon | $0.35 | — |
| Commander Masters | 262 | Common | $0.35 | $0.49 |
| Conspiracy: Take the Crown | 170 | Uncommon | $0.35 | $0.49 |
| The List | CMA-88 | Uncommon | $0.35 | — |
| Time Spiral | 180 | Uncommon | $0.35 | $1.49 |