Children's gossip. (Clea)
As a rule, Kristoff Venard did not do magic. No matter how much he knew, or how hard he worked, he did not do it very well. It had something to do with his accursed natural father; that was the impression Doom gave. Doom took it in stride and simply muttered that Kristoff was all the stronger for managing with inferior genes.

So Kristoff didn't do much magic, as he he was educated in the arts enough to know how inelegant and clumsy he was, and he hated seeing himself that way.

As a rule, Kristoff would also never betray a confidence. Especially that of a potential ally of the Master of Latveria.

And yet here he is. Doing both. He corrects himself. His word was never exacted by Jericho. But that only made talking about Doom's potential associates behind his back marginally easier.

The spell was cast clumsily and inelegantly and Kristoff hated it, but it was done well enough to work.