User blog comment:FairyRaven/One-time-only Spells/@comment-16344653-20120709131303

Why was Lucy special to the point of Hibiki entrusting the use of this spell to her only? Does it have to do with Lucy's role in the forthcoming events in the fairy tail manga? Or is it simply a stellar mage-only spell? If not, was Hibiki able to use that spell? If yes, then how did he get the archive of this spell and by whom? Lucy looked like she was in a trance while chanting the first time she used the spell. After she defeated Angel, she was also confused about her victory. So that led us to assume that she did not remember using the spell. However, in the grand magic games she re-used it! How did she learn about it again? I imagined everyone and especially Natsu to go like "OMG WTF Lucy can use other types of magic other than stellar spirit magic! Why/How?" But noone seemed surprised with Lucy (almost) using that spell at all. Why is that? I think I remember Hibiki saying that she could use it "just this once". How did she acquire the spell for a lifetime?
 * Uranometria
 * Because Hibiki wanted her to.
 * He couldn't or else he would've done it himself, of course.
 * She learned it. duh
 * Because Lucy is epically awesome. No surprise there. Or maybe because they were there when Lucy was training with it.
 * She learned it herself. Completely separate from Hibiki transferring the knowledge to her for some time.