"Right then - the most challenging aspect of the basic cast, is that it is nonverbal in nature. However, this is also one of its key advantages. Your opponent can’t hear you coming and isn’t forewarned that they need to defend themselves. Now, wordless magic - with no incantation to channel your magic, it can be an extremely difficult skill to master, but it is by no means impossible. Casting wordlessly, is about connecting with your magical core," Harry held his hand at his chest, "and how you achieve this will differ from person to person. For me, my magical core is that point of consciousness that I feel somewhere in the back of my mouth. If someone asked me, where I felt I lived in my body - that is where I would say. Hermione - where would you say you existed inside of your body?"