倉庫番コロッブ:
Ah, the silver dragon. How shall we do the trade? I can trade one silver dragon for 5 silver dryad and 5 silver undines or I can exchange it for you at a slightly better rate through a game that you know well.
Exchange at set ratio.
Play game. [Guess correctly in two tries - 3 silver undines]
Play game. [Guess correctly in three tries - 7 silver undines]
Play game. [Guess correctly in four tries - 9 silver undines]
Listen to game explanation.