The Dragon of Doom (Moongobble and Me Series #1)

Then Moongobble the Magician and his faithful toad, Urk, move into the cottage on the hill. Soon Edward has a job helping Moongobble. And Moongobble needs a lot of help, because it turns out he is not a very good magician. (His spells keep turning things into cheese!) Edward has never been so busy — or so happy. But then someone threatens to stop Moongobble from ever casting another spell. Edward can't let that happen. He'll do anything to save his friend's magic — even face the deadly, dreaded Dragon of Doom!