Toffee is an evil super-powered lizard from another dimension who wants to conquer earth.
Like anyone who doesn't know magic it's pretty easy to go 'he's a very powerful super with other mutated supers, here are photo's. As long as the "M" world isn't mentioned nothing magic can do is outside of people's worldview. Shego fires plasma from her hands and hired a portal-maker.
Yes. But on the other hand, Toffee has bullshit capabilities that are pretty far outside what most supers can accomplish. Voyd, famously, does portals, and does them well- but she doesn't seem to be able to portal across the continent the way a pair of dimensional scissors might. At a bare minimum, to effectively warn Shego against Toffee, we'd need her to know that he is
ridiculously more powerful than any super she's ever come across, with a much more diverse powerset that can achieve results that don't make a lot of sense in her existing reality framework.
Unless we demonstrate magic to her, I expect this to be something of an uphill battle.
All of this seems prefounded on the idea that dimensional scissors can transport to a particular dimension with that level of precision. Given that, at no point in the show, did anyone simply scissor into Star's room while she was asleep and steal the wand, I find premise iffy.
Now THAT is a good point.
If my memory does not fail me Ludo usually Scry ed Star's location and sent minions to fight her. They usually end up within line of sight of her no? That means Scrying + Scissors works?
I mean, yes and no. It "works" in that you can use scrying and the scissors to send kill teams after your enemies. But it
fails in that your kill team doesn't reliably get a surprise backshot on the target. They get a chance to fight back- and since Star kept winning those fights with the kill teams, that's a promising precedent.
As long as we're generally keeping respectable Martial badassery in the room with us as a bodyguard,
that kind of attack probably isn't too much of a threat.