You know, the Great Fairy spells being written down wouldn't even bother me if, say, they took months or years of training or something to be properly used, which is why Cana needed to learn hers through Deus ex Machina, but no, Lucy flips through some pages and throws out a bubble in spacetime, just like *finger snap* that.
Add it to the list of other spells Lucy mysteriously learnt in the space of about… a minute, along with Urano Metria and Aqua Metria.
It’s not even like Lucy’s that impressive with magic - she’s always been pretty average at best, so I’m not loving her suddenly being able to rewrite one of Zeref’s books and throw out one of the Grand Spells so casually.
Fairy Sphere specifically being left in a book makes sense if you read it as having been left there in case of a guild emergency, but it’s really weird that this spell in particular is the only one that can be accessed that. And I still can’t believe that it was in a book in the basement and Makarov didn’t know it. Really?