Heine isn't the only one frustrated. Jade had taken off his glasses, needing that additional boost to his abilities, but not even that had helped.

"I don't know," he says, then stops. No, he does know. Or he has an idea, at least. When he frowns, his expression is even darker than usual.

Professor Rammsteiner had sat down, so Jade interprets this lull in the practice as a break, and leans against the wall, folding his arms. Durmstrang really is cold. The stone is frigid under his body, rough-hewn and ungiving.

But despite the chill that surrounds him, he feels an odd (but not entirely unfamiliar) flush of heat under his collar.