Cheapest priced copy (Foundations): $0.49 at Card Kingdom, near mint, their price list as of .
Slagstorm 
Sorcery · Rare · Mirrodin Besieged · #75
Choose one —
• Slagstorm deals 3 damage to each creature.
• Slagstorm deals 3 damage to each player.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
3 printings · $0.49 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations | 207 | Rare | $0.49 | $0.49 |
| Mirrodin Besieged | 75 | Rare | $0.69 | $2.99 |
| Foundations Promos | 207s | Rare | — | $2.29 |