Cheapest priced copy (Fifth Dawn): $0.35 at Card Kingdom, near mint, their price list as of .
Spark Elemental 
Creature — Elemental · 3/1 · Uncommon · Tenth Edition · #237
Trample, haste (This creature can deal excess combat damage to the player or planeswalker it's attacking. This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, sacrifice this creature.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
5 printings · $0.35 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tenth Edition | 237 | Uncommon | $0.39 | — |
| Tenth Edition | 237★ | Uncommon | — | $0.99 |
| Fifth Dawn | 79 | Common | $0.35 | $0.79 |
| Premium Deck Series: Fire and Lightning | 4 | Uncommon | — | $0.49 |
| Ultimate Masters Tokens | 12 | Common | $0.35 | — |