Alt-text: "I had to restrain myself from having Halen do a magical girl pose in his first panel"

It's the boys ... !!

It's pretty hard to make oneself invisible when it's raining cats and dogs - but Halen is good enough at illusions that he can not only do that, but even include Book into that.

What even he can't do (as Kat says) is do that for large group of people ... hence the need for a different plan.