I do not own Draco Malfoy or any other part of the Harry Potter universe.
J.K. Rowling has said that Draco can not cast the Patronus charm because it is not taught at Hogwarts. This is my head cannon of what would have happened if it was.
When we were told we would be learning the Patronus charm, I gave little thought to what form mine would take. It seemed so sure. My Patronus must be something along the lines of a dragon, or a snake. Something scaly and cunning. It was a foregone conclusion, or at least, that's what I assumed. I was wrong, I was so very, very wrong.
Father, when he hears of this, will probably disown me. To think, this morning I thought that learning to cast the Patronus would impress him. I thought I would be one of the first to master it in my class, and thereby prove the superiority of my blood. Now I know I have proven nothing but my own uselessness. No, I am less than useless. I create problems for my father, because I am a disgrace.
And it's not as if I've failed to cast the charm, no that would be preferable to the pain I feel now. I'm the first to perform it correctly, besides Potter (but he's already learned it so he doesn't count), it's corporal, perfectly cast, and I've succeeded in every way but one: it's embarrassing.
It isn't a Serpent, the symbol of my house. It isn't a Dragon, my namesake. Not a cunning fox, or a wise owl. Not a proud eagle or a mysterious raven. Frankly, I would even prefer Weaslby's prediction of a ferret. I'm still not entirely convinced that this isn't some cruel joke that he and Potter have decided to torment me with. Because right now, sitting at the end of my wand, mocking me with its big brave eyes, is a silvery Gryffindor lion, and there is no way in hell that this is the animal that I share 'the greatest affinity' with.
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