The witch cackled darkly, "You know, for a wizard you're too naive. This isn't a normal acid. It's indigenous to me. The rituals I did, along with somethings I found in Knockturn alley helped me become an elemental of sorts, but I control and can conjure this acid, which is a combination of my blood, some very corrosive chemicals and some magic. There is no cure for the burns it causes! No skele-gro can regrow the bones I burn. I can't burn with my own acid, you fool. And you're a bigger fool indeed. The first one to draw my blood since Azkaban. You should get a reward! Tell you what, I'll not kill you outright as you so deserved earlier. I realize, you deserve something more. You'll live, live through it all." finished Hermione as she cleaned up her wound and blood with a wave.