Cheapest priced copy (Scars of Mirrodin): $3.49 at Card Kingdom, near mint, their price list as of .
Galvanic Blast 
Instant · Common · Scars of Mirrodin · #91
Galvanic Blast deals 2 damage to any target.
Metalcraft — Galvanic Blast deals 4 damage instead if you control three or more artifacts.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
7 printings · $3.49 to $109.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Double Masters | 125 | Uncommon | $3.99 | $6.99 |
| Duel Decks: Elves vs. Inventors | 45 | Common | $3.99 | — |
| The List | DDU-45 | Common | $3.99 | — |
| Secret Lair Drop | 1732 | Rare | $7.49 | $5.49 |
| Scars of Mirrodin | 91 | Common | $3.49 | $24.99Out of stock |
| Special Guests | 90 | Mythic | $7.99 | $11.99 |
| Special Guests | 100 | Mythic | — | $109.99 |