Head Blacksmith Ferris:
Oh, you mean the silver dragon? OK, shall we trade? I can trade 1 silver dragon for 5 silver dryad and 5 silver undines... Huh? Or would you rather play a game? That would be fine with me... I'm really strong at this game.
Exchange at set ratio.
Play game. [Guess correctly in two tries - 3 silver dryads]
Play game. [Guess correctly in three tries - 7 silver dryads]
Play game. [Guess correctly in four tries - 9 silver dryads]
Play game.