Cheapest priced copy (Duel Decks: Mind vs. Might): $0.49 at Card Kingdom, near mint, their price list as of .
Rubblebelt Raiders 
Creature — Human Warrior · 3/3 · Rare · RNA Guild Kit · #94
Whenever this creature attacks, put a +1/+1 counter on it for each attacking creature you control.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Mind vs. Might | 57 | Rare | $0.49 | — |
| RNA Guild Kit | 94 | Rare | $0.49 | — |
| Gatecrash | 224 | Rare | $0.49 | $0.49 |
One ruling from Wizards of the Coast
- 24 January 2013Count the number of attacking creatures you control when Rubblebelt Raiders’s ability resolves, including Rubblebelt Raiders itself, to determine how many +1/+1 counters to put on it.