Alright, well the curtana spell is from Carissa. For more stuff on the magic gods kinda just being on this level, it's also said that a magic god
would need to be one of the things that can stop it. You can also find the supporting evidence in
this blog. It talks about espers and their 11th dimensional calculation. To summarize it though it's that they do hop to the 11th dimension, curtana helps prove higher dimensional planes, and how phases and dimensions are treated. Phases are filters over the current world, layered over it like a canvas. While all dimensions are specifically also brought up by Othinus. The curtana scan, plus espers, and othinus's statement all mesh with each other as evidence. (Well hopefully)