Gold is buried under 3 random empty squares for 6 of your turns. Land one of your pieces on a nugget to gain 10 seconds; an enemy piece landing there first tramples that nugget into worthless dust.
You draft Gold Rush in either mode. Passive: it works on its own the whole time you hold it, with nothing to activate.
As a item card, it is a one-use consumable, drafted in either mode.
“There is gold in them there files.”