Hi guys, i'm making a hero defence map and i would like to know if it's possible to make a spell book for each hero which holds 11 spells but for every spell you can choose between 2 or 3 spells when a condition is emt (eg: a cetrein level). So it would have 22 to 33 spells but only 11 will be visible. I have no knowledge of jass but if it can be done through gui it would be great.