No Flying in the Hall (Mercer Mayer's Critters of the Night) (A Random House Pictureback; #5)

Thistle Howl attends witch's school and unwitchingly turns Miss Prickly and Miss Prune into toads while trying to make Magic Potion Number Nine. Can Thistle save them? The fledgling socceress has her hands full trying to reverse the spell, especially with a sea monster and monsterous mother bird in close pursuit!