User blog comment:Miskos3/Fairy Tail 521: The Strongest Wizard, Review/@comment-3045936-20170212214706/@comment-5894890-20170214160714

Except Fairy Law is a magic that uses the life force of the caster. Imagine using it on just one powerful guy... caster dies, enemy is still alive only because they're stronger in terms of magic power. Woops. It doesn't make sense to me, that something like Fairy Law would not effect the Spriggans simply because of who they are. For it to make sense, it is because they are strong, that they have the ability to nullify the effects Fairy Law. Someone like Zeref, August, or even Irene maybe doesn't need an explanation... but Ajeel (cough, who got defeated by Lisanna and Elfman)... etc? yeah, I would like to know how he fended it off.