Cheapest priced copy (Magic 2011): $0.35 at Card Kingdom, near mint, their price list as of .
Arc Runner 
Creature — Elemental Ox · 5/1 · Common · Magic 2011 · #123
Haste (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
1 printing · $0.35 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic 2011 | 123 | Common | $0.35 | $0.99 |