Head Blacksmith Ferris:
Oh, you mean the bereth's blood dragon? I can exchange a bereth's blood dragon for 10 blood basilisks and 10 blood succubus... Huh? Ah... Or would you rather play a game? That would be fine with me... I'm really strong at this game. We can exchange at a somewhat better ratio through this game that is popular at the collector's club.
Trade at set ratio.
Play game. [Guess correctly in two tries - 3 blood basilisks, 3 blood succubus]
Play game. [Guess correctly in three tries - 7 blood basilisks, 7 blood succubus]
Play game. [Guess correctly in four tries - 9 blood basilisks, 9 blood succubus]
Play game.