Guard Stan:
Oh, you picked a Gold Giant. Now, how should we trade? You can trade 1 Gold Giant for 5 Gold Drake and 5 Gold Knights. Or, you can play the game that is popular among collectors and obtain it at a better bargain.
Trade it at the standard rate.
Play the game [Get it correct on the second try - 3 Gold Drake]
Play the game [Get it correct on the third try - 7 Gold Drake]
Play the game [Get it correct on the fourth try - 9 Gold Drake]
Listen to the game instructions.