Cheapest priced copy (Duel Decks: Jace vs. Chandra): $0.35 at Card Kingdom, near mint, their price list as of .
Slith Firewalker 
Creature — Slith · 1/1 · Uncommon · Mirrodin · #107
Haste
Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
6 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Jace vs. Chandra | 39 | Uncommon | $0.35 | — |
| Duel Decks Anthology: Jace vs. Chandra | 39 | Uncommon | $0.35 | — |
| Mirrodin | 107 | Uncommon | $0.35 | $0.49 |
| Japan Junior Tournament | 1N05 | Rare | — | — |
| Junior Series Europe | 1E05 | Rare | — | — |
| Junior Super Series | 10 | Rare | — | — |