Legendary Sword = Gavin the Squire  + Spell Book  + Short Sword 

Spell Book = Magic Potion  + Scroll  + Fairy Queen 

Armored Knight = Gavin the Squire  + Legendary Sword  + Knight's Shield 

Alfgar the Wise = Armored Knight  + Crystal Ball  + Dark Slime 

Dragon = Armored Knight  + Legendary Sword  + Fairy Queen 

Wizard = Dragon  + Scroll  + Spell Book 

Castle = Wizard  + Alfgar the Wise  + Dragon