A little extra caution never hurt. Your regular political opponents may be cut off, but that miasma is out there for a reason. I would think the greatest threat to whoever went through all the effort, would be the leader with a collection of of strange foreigners with unique abilities.

We have to act with the assumption that you are the only one with access to otherworlders, and the only one organized enough to potentially undo this. [He took another sip from his glass of wine.] I mean, I certainly wasn't snooping around this place for my health. Your rooftops are something treacherous... I mean, preferable to eavesdropping on nobility, but still.

[And it was anyone's guess how he managed to even get on the roof in the first place, but it might explain how he had gone about snooping.]

I'd be more than willing, and I won't turn down any help you could offer. I might have been able to handle it on my own once, but I'm a little short handed now. My spells have been a little lopsided, and I would rather not die to something too foolish if I can help it.