User blog comment:IamJakuhoRaikoben/Chapter 278: Elfman vs. Bacchus, Review./@comment-4449950-20120409031825/@comment-71.189.43.64-20120410191205

You make some good point, and I like your thinking in general. You pointing out that she could be chanting rather than singing(casting as the case might be) is something to focus on. Still i think you might be off, and it is not Urano Metria that is being cast. So let me take us down an alternate route here.

The name, eclipse plan, itself I think is a clue to what she is doing. A spell we have not seen yet, and one that is most likely have not seen yet. The fact that her casting Urano Metria impressed them could simply be because of how hard it is to cast. Consider it a proving of one worth. The array itself might be what it takes to cast such a spell. Since this spell is very likely a CS spell(would make little sense otherwise)it would most likely have to do with the stars(sun being a star for possible eclipse connection, maybe a bit of a stretch) because of the nature of CS magic(all the summons are named after a constellation if I am right). Unfortunately I can not say much on what this could be at the moment.

Also the fact that Zeref is somehow involved(to my knowledge at least) should not be overlooked. This further gives me reason to think that Urano Metria is not what is being cast. If just destruction was the goal then l would think that Zeref has other, most likely simpler, means of accomplishing it. I am thinking that this would have some other end, but I can not think of anything. Once more I think the name is key, but other than covering the land in an eternal darkness(which I doubt is the case) I can not think of an idea.

I know I did not come to many conclusions, but mostly I am just trying to offer a different point of view; a point of view that might be a bit more in the realm of speculation.