Earthcraft
{1}{G}
Enchantment
Tap an untapped creature you control: Untap target basic land.
Trade Caravan
{W}
Creature -- Human Nomad
1/1
At the beginning of your upkeep, put a currency counter on ~this~.
Remove two currency counters from ~this~: Untap target basic land. Activate only during an opponent's upkeep.