Magic Spell

I saw a wizard cast a magic spell. Six dolphins jumped from the sea. He asked me kindly not to tell. They grew legs and danced with glee. They really danced quite well. He caught a wave in his hand, From one of the seven seas He turned it into a strip of land. On that island he put some trees, Also, tropical flowers quite grand. He then turned his attention to me. He suggested a gift, very expensive. And asked what I wanted to be. He stood looking very pensive. I answered emphatically “just me.”