User blog comment:FairyRaven/Fairy Tail Chapter 369: The Place Prayers Reach, Review and Commentary/@comment-3424593-20140131121203/@comment-7418318-20140131174043

Ah, gotta love the people who immediately scream "Mashima copied from Oda" without checking and it turns out that Mashima did it first in Rave or some other of his Manga.

But for the protocol Mashima didn't exactly invent meteor or meteor shower spells either. To give one concrete example (and even a close-to-home for Mashima), Final Fantasy 4 already had the "Meteo" spell, which hit all enemies with e meteor shower back in the year 1991.