All my comments go directly towards the Nutaku version of the game and current content not only because the translation from DMM is dodgy but almost no one migrates over here to explain correctly, also I don't think the Nutaku Version will make it that far.
Pretty much, I do check future events and weapons just not Eidolons, the JP Wiki is the same source of info that says Yatagarasu and Cthugha are Attribute Attack so is it an okay source of info?