Caravan Guards

{t}: Place a progress counter on Caravan Guards.
If you control three or more adventurers, place
two progress counters on Caravan Guards
instead.
(Adventurers are creatures with the subtype Warrior, Rogue, Wizard, Monk, and/or Cleric.)
When Caravan Guards has 3 or more progress counters, sacrifice it, draw a card, and get two treasure tokens.