Don't see why people are complaining about what Happy said, it's Happy, he's a goddamn idiot. Erza in the previous chapter said how she was able to do it and that is a theme of this series, friendship, the feelings of losing them, feelings power magic in this series so it makes sense. This is a series about magic, magic is, well it's magic. There ain't no true definition and there can be plenty of spins on it, look at Mahouka's magic as technology.
Feels like people are complaining because magic is magic.
Anyway amazing chapter as usual. Erza really does bring a new meaning to the word badass, hell she is the definition of badass now. Excellent fight and Minerva finishing the fight, cheeky. Magic is gonna disappear now, holy shit! Fairy Tail are screwed. 10/10 as usual. Hiro Mashima continuing the best arc in any series this year. He is a god. Oda level now.