“Hmm… You are correct about that. I can’t just take it, or it’ll be transported back to you, won’t it?” He tugs the copy skyward, looks curiously at its eye.

“Well, perhaps I can bring what I need here, and try figuring this thing out while you observe.”

It isn’t even a threat, just a casual suggestion. As if he doesn’t realize Frisk and Barnaby don’t want to see what he does in the name of curiosity. He’s already turning and walking away, letting the copy fall back down to the ground.