Ed was half expecting Elsa to reject his explanation, or at least shrug it off. The fact that she considered her powers might follow some principles, scientific or not, helped him accept what was going on. He could relate to the problem of using a power you think you understand only to be shown how ignorant you really were about it. "Maybe you just need some help setting up some way to study it."

Ed's face morphed from skepticism to alarm. He was strongly reminded of when he, Ling, and Envy had gotten themselves swallowed by Gluttony. The place they had ended up in, while different in that it seemed to stretch on forever and not loop in on itself, felt too similar for Ed's liking. "Yeah. I need to see this."