You will need to make 2 copies of this card to complete the collection.
Spell Book =
Magic Potion 
+ Scroll + Fairy Queen
Dragon =
Armored Knight 
+ Legendary Sword + Fairy Queen
Armored Knight =
Gavin the Squire + Legendary Sword + Knight's Shield
Legendary Sword =
Gavin the Squire + Spell Book + Short Sword
Legendary Sword =
Gavin the Squire + Spell Book + Short Sword
Spell Book =
Magic Potion + Scroll + Fairy Queen
Wizard =
Dragon + Scroll + Spell Book
Castle =
Wizard + Alfgar the Wise + Dragon