Do you really think that to be a Wizard is an easy job? One wave with a magic wand and all your problems vanish! But even if you graduated from the Academy of Wizardry and Magic with a degree hundreds years ago and your works are the most quotable at all Chairs of Spells and Charms, this fact doesn`t speak to your superiority. So just is our Magician who has got into a scrape. He confused the spell and zillions of precious stones are threatening the tower. Your keenness of wit and providence should help the sorcerer. But don`t forget that not all the stones are the same - some of them possess great magic power that will help the magician to remember his spell and get out of the dangerous tower.