Give Yourself Goosebumps Under The Magicians Spell Book 7

You and your sister and your best friend found a new magic shop at a mall. The man inside calls himself magician. He's pretty creepy. Before you know it, your little sister runs out of the shop with his book of magic spells. If you read one of the spells, you find yourself in the magician's workshop. Suddenly you are a part of a magic act. You are forced outstage, about to be sliced into a million pieces.