Being Expendable

Being Expendable, written by
"Oh, I like you," said Moody. "Don’t believe a thing Dumbledore says now; he’s just going to give you half-truthful platitudes. I can’t do it by myself; don’t know enough about Transfiguration and passing as a Muggle. You can’t do it by yourself; don’t know enough about killing people. It might be important, or it might not, but Albus here had a rare fit of sincerity and vouched for it, so I’m willing to go."
Or: did you know that McGonagall and Moody were sent on a spy mission in the war against Grindelwald when they were in their twenties? Did you know that Moody can do a wandless Petrificus and McGonagall can fire a gun? Did you know that they were total badasses?
Now you do.
I am completely in love with the way this author writes magic—a beautiful, tactile, intricate understanding of how spells work. You should check it out.