It's not even a real spoiler. More like a teaser for something that might come if overlord reached season 3.
Oh and I love the Evileye reveal there.
is the art done by so-bin?
All official Overlord arts are done by so-bin
I think the specific question Mentalerror was asking was whether the artwork and character renders in the song were done by So-bin. There are cases where the studios take liberties with altering/adjusting character art from LNs when they're turned into Animes.
I see, well, the anime sure was not drawn by so-bin nim.