The thought of the Doctor destroying the blackflight from the inside out makes him laugh delightfully. Wouldn't that be something!

"No, no, my dear. If anything he'd think he could 'make us better.'" He is named "the Doctor" after all, though the Master is still trying to get a handle on this newer regeneration.

"Besides, I don't believe he'll be a thorn in my side for quite a long while, and even then it won't be a problem." And if it, well, he'll deal with it himself.