Cheapest priced copy (Homelands): $0.35 at Card Kingdom, near mint, their price list as of .
Trade Caravan 
Creature — Human Nomad · 1/1 · Common · Homelands · #19a
At the beginning of your upkeep, put a currency counter on this creature.
Remove two currency counters from this creature: Untap target basic land. Activate only during an opponent's upkeep.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern