Frosch needs to take off the frog suit before he can fly.
Loved that Gajeel is using his competitive fire to take his magic to the next level. Natsu can't be the only dual-nature dragon slayer around. I am also worried about the shadow influencing Gajeel to the dark side. I think the thoughts regarding Wendy possibly becoming a wind/light DS aren't far-fetched.
Agree that future Lucy is getting sketchier by the minute.
It looks like the "thing" possessing Rogue is the evil magic Ultear and company have been hunting for. I thought it might be Zeref, but the First and Third know about Rogue/Reyos being possessed and the First has an idea about its magic. If it was Zeref, they would state it plainly and they didn't.
It looked to me that Rogue and Acnologia's patterns are negative images of each other; Acnologia's swirls were light, while Rogue's were dark.
Cannot wait for next week's chapter! I want to see what epic magic the Iron Shadow Dragon can do!