Go to Fort Condor after getting through the Cave of the Gi, but before getting the Tiny Bronco. Now, start the mini-game in which you defend the fort. Play it and beat it. Make sure that the army kills the commander, not you and your characters. At the end of the mini-game, you should "get" 5 potions. But in reality, you get nothing. This also works after getting the Tiny Bronco, but before getting the Keystone.
Submitted by: Thor