Merlin - Gameboy Color - Puzzle

Join Merlin, the greatest magician of all time, in his quest to save the five mystical worlds from the evil Dragon. Legend's told of the Dragon who would emerge from his sleep every thousand years to reign over the Earth, peace and harmony would give way to war and disaster. Already kindly magical creatures of the worlds have been enslaved by the dragon to carry out his evil designs. Can Merlin restore peace and harmony to the mystical realms?