Well, I'd say F-F has a lot more to worry about than Hydra does. I heard Moebius Ollivander had his bits removed and kept in a jar until he was done with school. After he messed with Marvolo's Granger, you know? Anyway, if F-F crosses the Lestranges I'll be surprised if they're in any shape to be put back on, you know?

Apparently he likes to live dangerously.