User blog comment:Ezere Fernandez/***SPOILER(-ish..)***why do you think Raven Tail Wants Lumen Histore'?/@comment-4078901-20120610014106/@comment-3075024-20120610060715

Yep, Lumen Historie seems like something that powers Fairy Tail. So as anti-fairy tail guide, it's obvious that Raven tail wants to get thir hands on it. Either to destroy Fairy Tail by stealing their power source or using that power to commit crimes.