CHAPTER 11

They arrived at the Defence against the Dark arts classroom and took their seats right at the back. Professor Lovegood was already at the teacher's desk, watching the students pile in and twiddling his thumbs. When everyone was seated he stood up. "Good morning everyone. Today we will be looking at the Custos spell. It is a quick and easy way to defend yourself. Can anyone tell me what it does?" He looked round the class. Of course, Hermione had raised her hand. "Yes" He said looking at Hermione.
"It creates a partially invisible bond between the caster and an opponent that cannot be crossed through." Said Hermione.
"Excellent Hermione," Said Professor Lovegood smiling at her, "five points to Gryffindor."
"How does he know my name?" Hermione hissed at Harry and Ron.
"Well," continued Professor Lovegood. "I doubt any of you will be able to actually create the spell yourself. But you may practise with a partner. Just flick your wand and say, Custodis! You may begin."
Harry teamed up with Ron who went first "Er, Custodis," he said flicking his wand. A jet of steam came out of the end of it. "Oh, sorry," he said as Professor Lovegood came towards them. The steam had hit him full blast, staining his face a murky grey.
"You've got to be clear with it!" Said Professor Lovegood pulling out his own wand and restoring his face and hair back to normal. "Try it again, really flick your wand." Ron tried again and a small patch of mist appeared in front of him. "Go on Harry!" Said Professor Lovegood, "try and walk through it!" Harry didn't bother asking how he knew his name. He stepped forwards. It felt like trying to walk through water.
"Cool!" Said Ron as Harry gave up and pulled out back through the mist.
"Very good," said Professor Lovegood. "You're Ron, aren't you?"
"Yeah," said Ron.
"Ah yes, you were the one who made the polyjuice potion."
"Er..." Said Ron but he was spared answering by Harry casting the spell.
"Custodis!" He yelled and a very large but faint silvery clear bubble surrounded him. Ron stepped towards it, but it pushed him back like a large inflatable balloon.
"Oh, very good," said Professor Lovegood looking surprised. "Er, yes girls?" Parvati and Lavender had just approached him. Both looking like they'd just survived a hurricane.
"Um, Professor, I think it's gone wrong." Said Parvati. Professor Lovegood vanished from Harry and Ron's table.
"How does he know who I am?" Asked Ron looking surprised. "And how does he know about the poly - " "Shhhh!" Hissed Harry. "I don't know, maybe it's something to do with Dumbledore."
"Yeah, probably." Said Ron looking more convinced.
The bell for the end of the lesson rang and Professor Lovegood gave out their homework. There was a very loud groan. "Don't worry," said Professor Lovegood, looking up. "You have a week. You wont be having me for the next few lessons."
"How come?" Asked Dean.
Professor Lovegood gave him the mysterious smile Harry recognised so well from Luna. "Something to do with Dumbledore." He said lightly.