How do you get the pyrite plate in battleon

Go to *Alnaphar* and when she's done talking click on the rainbow you wil see a leprichaun. after that you need to battle around 20 monsters and after every 2 fights a bag of potions apear or twilly who heals you.. after those fights you get the choice to buy pyrite plate and quest further for golden plate. pyrite plate costs 100k gold