He's not wrong, though a lot of it has to do with their mastery over moonglove poisons to kill their opponents more than any innate magic. Most of them have deathtouch.

"Pftt..."

She actually laughs. Papyrus's...animated...way of speaking and gesticulating has a way of getting her to relax and have fun even if he's trying to be serious.

Quite a bonehead, that one.

"...Well, yes, I'm sure they do. I avoided them on general principal when I was on Lorwyn. They don't like outsiders much. Probably to do with the headaches. But anyway! You didn't miss anything fun with all that mist. It generally sort of sucked."

A lot of sucked, actually.

"And Dorchacht, when I went, wasn't that different from the dream.