Cheapest priced copy (Onslaught): $0.35 at Card Kingdom, near mint, their price list as of .
Sparksmith 
Creature — Goblin · 1/1 · Common · The List · #ONS-235
{T}: This creature deals X damage to target creature and X damage to you, where X is the number of Goblins on the battlefield.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
4 printings · $0.35 to $4.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Friday Night Magic 2003 | 10 | Rare | — | $4.99 |
| Onslaught | 235 | Common | $0.35 | $4.49 |
| The List | ONS-235 | Common | $0.35 | — |
| World Championship Decks 2003 | we235 | Common | $0.35 | — |