Alot of people seem concerned about the art. There shouldn't be any concern. It was a point one issue with a fill in artist. #19 comes out just 2 weeks after 18.1, and it's back to the usual awsome art.
I don't have any complaints about the art. The art was good. I'm cool with it.
The one thing I take from 18.1 is when Kitty said that Nomi was an orphan, and then Nomi showed her Magneto like powers to Kitty. Like others have stated, Nomi has different colored hair. Blue to be exact. She also has a strong distaste for humans, and wants to start a war against them. I wonder if Nomi Blume AKA Mach Two is the long lost daughter of Magneto.